Here's another Roadgeek game to give your minds an exercise:
What interchange in your state has the highest sum/number if you added the exit numbers from each roadway together?
For Example, I am pretty sure the highest sum possible in Colorado is the interchange of I-70 and I-25 in Denver
I-25's interchange with I-70 is Exit 213
I-70's interchange with I-25 is Exit 274
Adding the Exit Numbers together,
213 + 274 = 487
The Number is 487.
- Only one exit number per route can be used (i.e. adding I-25's Exit 213 A and 213 B together or Exit 213 NB + Exit 213 SB is not allowed -- the I-25 exit is only 213)
- You may use/add sequential exit numbers with each other or any other combination of sequential & mileage-based numbers together.
- If you have an interchange with more than 2 roads/routes, you may add all numbers together, provided each route has it's own unique exit number and that all route connections are part of the overall interchange.
It will be likely that California or Texas will have the ultimate sum/highest total, but it will be fun to see what & where the highest numbers can be in each state.
Annnd GO!!!
Little Rhody's is 19. I-195 splits at I-95 and there is no exit number. The exit number for I-195 off on I-95 is 19.
Some low ones:
Massachusetts: 84. Exit 44 on I-93 and Exit 40 on I-495. (I-495 doesn't have a numbered exit when it merges with I-95 in Salisbury.)
New Hampshire: Absolutely nothing qualifies. Interstate junctions are unnumbered in New Hampshire.
Vermont: Again, nothing qualifies. I-89 and I-93 are both unnumbered at I-91, I-189 doesn't have exit numbers, and the US route and state route freeways don't connect to the Interstates or to each other.
The winner is south of Dallas, TX:
I-35E meets I-20 at Exit 418
I-20 meets I-35E at Exit 467
418+467=885
The highest fully signed one in Utah is I-15/80 in Salt Lake City, which is 120 + 308 = 428.
US 89 is unnumbered at the I-84 junction, but if it were, it would be numbered 406. The sum there would be 87 + 406 = 493.
For my native state of Indiana it's almost certainly where the Toll Road meets I-69: 144 + 356 = 500
Looks like in Ohio, we have a 3-way interchange as the winner:
I-71/I-90/I-490 in Cleveland:
I-71 Exit 247 +
I-90 Exit 170 +
I-490 Exit 1 =
418
Connecticut: The interchange between I-91 and I-84 in Hartford. I-84's exit 51 + I-91's exit 32 equals 83.
Quote from: wriddle082 on June 11, 2018, 08:30:41 PM
The winner is south of Dallas, TX:
I-35E meets I-20 at Exit 418
I-20 meets I-35E at Exit 467
418+467=885
The exit to I-10 from I-69 is number 132. That plus I-10's 770 makes 902.
I didn't know I-69 had exit numbers, but I checked Street View and saw that it does. Google Maps doesn't have them labeled, but the tabs are on the signs (at least at I-10).
https://goo.gl/maps/eNVYtZGf5dn (https://goo.gl/maps/eNVYtZGf5dn)
132 miles from that point along the existing road is on the south side of Victoria.
Illinois's is I-57 & I-80. 151+345=496.
Georgia's champion is the northern split of I-75 (251) and I-85 (85) with a total of 336.
The only other one over 300 is I-75/85 (247) and I-20 (57). (I-85 northbound has no exit to I-75 south at the southern merge, so there's no eligible number there.)
For Arkansas...
I-40 meets I-30.
153 + 143 = 296.
Wisconsin, I-41 and US 10 (WI 441)
134+287=421
NJ has an oddball winner:
I-76 Exit 354 plus I-676 Exit 1 = 355
Alternative thread title: northeastern-most mainline interstate interchange in each state
Delaware: DE 1 Exit 165 + I-95 Exit 4 = 169
Missouri's is/may be currently I-44 at I-55.
207 (on I-55) +290 (on I-44) =497
If the I-44 interchange at I-70 is ever completed, this interchange will take over - or depending how one counts the WB exit to Madison Street, it may already be the highest.
249 (on I-70) + 292 (assumed for I-44) = 541
Hawaii's highest sum is at H-201's eastern junction (4) with H-1 (19) = 23.
Alaska doesn't do exit numbers, except for one freeway in Fairbanks that doesn't connect to any other freeways.
I think California's is in Redding, at the interchange of I-5 (678) and CA 44 (2) = 680. The I-5 interchange with CA 299 would be higher, except 299's exit numbering only starts east of I-5, with no number on 299 for its interchange with I-5. Similar situation with the US 101/CA 299 interchange, where US 101 has a numbered exit (716) but CA 299's exits onto US 101 are unnumbered.
Maine...
I-95 meets I-395 at exit 182
I-395 meets I-95 at exit 1
182 + 1 = 183
I think in New York, if you allow that the Thruway interchange is part of the Exit 131 complex from NY 17, then that would be the winner. Adding the Thruway's exit number for NY 17, which is Exit 16, you get 147.
(And if you also add in the Woodbury toll barrier, which is located within the interchange, and for toll collection purposes is designated Exit 15, then you get 162.)
Because of how the Thruway interrupts the exit sequences of both I-87 and I-90, there's really no other competitive option in the state. I-495 gets up to Exit 71, but nothing intersects it that far east (and even if it did, it would only be able to add a handful of exits to the sum total).
Minnesota's is 349 at I-94 (242) and I-35 (107) in St. Paul.
2. I-94 (249) at I-494/694 (58) = 307
3. US 10 (236) at I-35W (30) = 266
4. I-94 (233) at I-35W (16) = 249
5. I-94 (216) at I-494/694 (27) = 243
Nevada currently only has 6 locations where two freeways with numbered exits intersect. Not all interchange locations are fully finished with all possible freeway-to-freeway numbered exit ramps completed.
129 = 91 (on US 95) + 38 (on CC 215) *
118 = 42 (on I-15) + 76 (on I-515/US 95)
103 = 52 (on I-15) + 51 (on CC 215) **
83 = 15 (on I-80) + 68 (on I-580/US 395)
62 = 61 (on I-515/US 95) + 1 (on I-215)
46 = 34 (on I-15) + 12 (on I-215/CC 215)
*This junction does not currently have ramps in all directions, but the exit numbers are established for both highways.
**The exit number for CC 215 shown here is an estimate; this section of 215 is not yet constructed as a freeway. Different sources indicate slightly different mileages.
Pennsylvania's largest sum is because of the way the Turnpike's and I-76's exit numbers are handled. The roads are one and the same for 326 miles until Valley Forge, after which both I-76 on the Schuylkill Expressway and I-276 on the Turnpike continue the exit numbers up to 351 and 358, respectively. Valley Forge is thus both Exit 326 of I-76 and Exit 326 of I-276, for a sum of 652. Quite a big number for state only about 300 miles across.
The next biggest seems to be I-80 (Exit 260) and I-81 (Exit 151), which make a sum of 411.
Quote from: csw on June 11, 2018, 10:31:56 PM
Alternative thread title: northeastern-most mainline interstate interchange in each state
Not necessarily. Most states have interstates that start and stop all over the place and don't necessarily get maximum mileage of the size of the state.
Pa's is at the Junction Of I-81 Exit 194 and I-476 Exit 131 near Scranton for a total of 325. It could possibly !-76 and I-95 In Phila but I dont think there is a direct connection between them
Oops I forgot about 80 and 81
Quote from: oldparoadgeek on June 12, 2018, 02:37:46 AM
Pa's is at the Junction Of I-81 Exit 194 and I-476 Exit 131 near Scranton for a total of 325. It could possibly !-76 and I-95 In Phila but I dont think there is a direct connection between them
I guess my post wasn't there when you started writing this one.Actually, like I said just earlier, I-76/276 at Valley Forge as well as I-80/81 both beat I-81/476. I-95/276 is surprisingly low, only 397 (~356 + ~41). I-295 won't factor in because of its bizarre east-west mileage starts at 0 there.
Within CA, the highest-numbered double-Interstate interchange would be I-5 (exit 522) with I-80 (exit 86), rendering a total of 608. Of course, as has been previously stated, I-5 with CA 44 is somewhat higher (680); that's the farthest north freeway-to-freeway interchange in CA with exit numbers for both intersecting routes. Of course, it would have been considerably higher prior to the rerouting of CA 299 in the Redding area several years back; if anyone has any pix of a EB CA 299 exit number at the I-5 interchange (if indeed exit numbering had been applied to 299 before the switch), please post if just for the purposes of edification!
Quote from: WR of USA on June 11, 2018, 08:52:39 PM
Connecticut: The interchange between I-91 and I-84 in Hartford. I-84's exit 51 + I-91's exit 32 equals 83.
Close, but a couple miles south you have I-91 North and CT 15 North. I-91 to CT 15 North is Exit 29. CT 15 North to I-91 North is Exit 89. 89+29=
118
Quote from: sparker on June 12, 2018, 02:52:17 AM
Within CA, the highest-numbered double-Interstate interchange would be I-5 (exit 522) with I-80 (exit 86), rendering a total of 608. Of course, as has been previously stated, I-5 with CA 44 is somewhat higher (680); that's the farthest north freeway-to-freeway interchange in CA with exit numbers for both intersecting routes. Of course, it would have been considerably higher prior to the rerouting of CA 299 in the Redding area several years back; if anyone has any pix of a EB CA 299 exit number at the I-5 interchange (if indeed exit numbering had been applied to 299 before the switch), please post if just for the purposes of edification!
(Data from OpenStreetMap)
I-5 and CA 99. 525+306=831.
385 for Alabama, at I-65 and I-20/59 for exits 261 and 124, respectively.
Quote from: Roadsguy on June 12, 2018, 02:33:03 AM
Pennsylvania's largest sum is because of the way the Turnpike's and I-76's exit numbers are handled. The roads are one and the same for 326 miles until Valley Forge, after which both I-76 on the Schuylkill Expressway and I-276 on the Turnpike continue the exit numbers up to 351 and 358, respectively. Valley Forge is thus both Exit 326 of I-76 and Exit 326 of I-276, for a sum of 652. Quite a big number for state only about 300 miles across.
Correct me if I'm wrong, but there is no Exit 326 on the Schuylkill Expressway. The last exit is 327 and the Turnpike entrance is not marked as an exit.
New Jersey has Exit 354 on I-76 before NJ exit numbers kick in. Unfortunately it leads to Exit 1 of I-676 meaning the sum is only 355. Aside from that, the Garden State Parkway / I-80 interchange is 159+62 = 221 which is the maximum I believe.
WA: I-5 (182) and I-405 (31) north of Bothell, for a total of 213 (which is a technicality since I-405 does not have exit numbers on either end); if this were restricted to interchanges where both highways have exit numbers, it would be I-5 (164) and I-90 (2) in Seattle, for a total of 166. These junctions are a rarity in which it is not in an expected location.
Quote from: bzakharin on June 12, 2018, 09:18:22 AM
Quote from: Roadsguy on June 12, 2018, 02:33:03 AM
Pennsylvania's largest sum is because of the way the Turnpike's and I-76's exit numbers are handled. The roads are one and the same for 326 miles until Valley Forge, after which both I-76 on the Schuylkill Expressway and I-276 on the Turnpike continue the exit numbers up to 351 and 358, respectively. Valley Forge is thus both Exit 326 of I-76 and Exit 326 of I-276, for a sum of 652. Quite a big number for state only about 300 miles across.
Correct me if I'm wrong, but there is no Exit 326 on the Schuylkill Expressway. The last exit is 327 and the Turnpike entrance is not marked as an exit.
I'm going off the Turnpike's exit. The eastbound exit is Exit 326 for I-76, and the westbound exit is Exit 326 for I-276. It's really pushing it, but is indeed separate interstates. That's why I also included the I-80/81 sum.
Quote from: bzakharin on June 12, 2018, 09:18:22 AM
New Jersey has Exit 354 on I-76 before NJ exit numbers kick in. Unfortunately it leads to Exit 1 of I-676 meaning the sum is only 355. Aside from that, the Garden State Parkway / I-80 interchange is 159+62 = 221 which is the maximum I believe.
Shows how small New Jersey is (or at least how few Interstates it has) that one road coming in from PA brings with it a single exit number bigger than the sum of any other two exit numbers in the state. :P
Quote from: Roadsguy on June 12, 2018, 10:43:21 AM
Shows how small New Jersey is (or at least how few Interstates it has) that one road coming in from PA brings with it a single exit number bigger than the sum of any other two exit numbers in the state. :P
It's definitely the former. Both these routes span the entire state, south to north and west to east respectively, and are the longest freeways in the state in their respective direction. The GSP's highest mile marker is 172.4. I-80's is 68.8 (though you can add 4 miles of I-95 to get to the NY state line from 80's eastern terminus).
NJ has a pretty adequate freeway (if not all Interstate) system. The only important missing link is between Trenton and I-287, the cancelled Somerset Freeway. Some nice to haves would be the completion of NJ 55, something along the western state line north of Trenton, and something along the US 40 corridor. None of these would increase the maximum mileage.
Quote from: jon daly on June 11, 2018, 08:00:05 PM
Little Rhody's is 19. I-195 splits at I-95 and there is no exit number. The exit number for I-195 off on I-95 is 19.
Actually it is 20 because I-195 has a different exit number on I-95 SB.
Quote from: empirestate on June 12, 2018, 01:40:16 AM
I think in New York, if you allow that the Thruway interchange is part of the Exit 131 complex from NY 17, then that would be the winner. Adding the Thruway's exit number for NY 17, which is Exit 16, you get 147.
(And if you also add in the Woodbury toll barrier, which is located within the interchange, and for toll collection purposes is designated Exit 15, then you get 162.)
Because of how the Thruway interrupts the exit sequences of both I-87 and I-90, there's really no other competitive option in the state. I-495 gets up to Exit 71, but nothing intersects it that far east (and even if it did, it would only be able to add a handful of exits to the sum total).
I personally wouldn't, since I consider exit 131 to be specifically for NY 17/NY 32, with the ramps to the Thruway unnumbered, and since I wouldn't include the barrier. The only other one that would compare, though, would be I-84/NY 17 at 125 (4 and 121). The next one down is probably the Bruckner at 91 (54/6/19/12).
Florida's is I-75/I-10 (435/296): 731
Quote from: Roadsguy on June 12, 2018, 02:41:47 AM
Quote from: oldparoadgeek on June 12, 2018, 02:37:46 AM
Pa's is at the Junction Of I-81 Exit 194 and I-476 Exit 131 near Scranton for a total of 325. It could possibly !-76 and I-95 In Phila but I dont think there is a direct connection between them
I guess my post wasn't there when you started writing this one.
Actually, like I said just earlier, I-76/276 at Valley Forge as well as I-80/81 both beat I-81/476. I-95/276 is surprisingly low, only 397 (~356 + ~41). I-295 won't factor in because of its bizarre east-west mileage starts at 0 there.
PA doesn't use exit 0. Most freeways begin at exit 1 (though some do have unnumbered termini) and I can't imagine why they wouldn't here.
According to the visualizations here (https://www.patpconstruction.com/paturnpikei95/drive-thru-south-to-north.aspx) none of the routes involved in the interchange (95/295/276) have exit numbers at the interchange.
Kentucky's entrants in this game are the Western Kentucky Parkway (137) at I-65 (91) for a sum of 228, and I-71 (77) at I-75 (173) for a total of 250.
North Carolina -
Western US 70/US 17 - 410 + 147 = 557
Eastern US 70/US 17 would be larger, but US 17 uses the US 70 exit number.
Quote from: 1 on June 11, 2018, 08:03:29 PM
Some low ones:
Massachusetts: 84. Exit 44 on I-93 and Exit 40 on I-495. (I-495 doesn't have a numbered exit when it merges with I-95 in Salisbury.)
New Hampshire: Absolutely nothing qualifies. Interstate junctions are unnumbered in New Hampshire.
Vermont: Again, nothing qualifies. I-89 and I-93 are both unnumbered at I-91, I-189 doesn't have exit numbers, and the US route and state route freeways don't connect to the Interstates or to each other.
I'm pretty sure that I-93 is Exit 19 on I-91. For NH, I-393 is signed as Exit 15E on I-93 along with the US routes. Would that qualify? (Not that 19 and 15 are impressive, but they are something at least)
Quote from: PurdueBill on June 12, 2018, 05:03:30 PM
Quote from: 1 on June 11, 2018, 08:03:29 PM
Some low ones:
Massachusetts: 84. Exit 44 on I-93 and Exit 40 on I-495. (I-495 doesn't have a numbered exit when it merges with I-95 in Salisbury.)
New Hampshire: Absolutely nothing qualifies. Interstate junctions are unnumbered in New Hampshire.
Vermont: Again, nothing qualifies. I-89 and I-93 are both unnumbered at I-91, I-189 doesn't have exit numbers, and the US route and state route freeways don't connect to the Interstates or to each other.
I'm pretty sure that I-93 is Exit 19 on I-91. For NH, I-393 is signed as Exit 15E on I-93 along with the US routes. Would that qualify? (Not that 19 and 15 are impressive, but they are something at least)
Even if I-93 is Exit 19 on I-91, I-93 is unnumbered at its terminus. Similarly, I-393 is unnumbered where it meets I-93, despite it being Exit 15E on I-93.
Louisiana: I-10 (exit 267) + I-12 (exit 85) + I-59 (exit 1) = 353
Quote from: 1 on June 12, 2018, 07:15:38 AM
Quote from: sparker on June 12, 2018, 02:52:17 AM
Within CA, the highest-numbered double-Interstate interchange would be I-5 (exit 522) with I-80 (exit 86), rendering a total of 608. Of course, as has been previously stated, I-5 with CA 44 is somewhat higher (680); that's the farthest north freeway-to-freeway interchange in CA with exit numbers for both intersecting routes. Of course, it would have been considerably higher prior to the rerouting of CA 299 in the Redding area several years back; if anyone has any pix of a EB CA 299 exit number at the I-5 interchange (if indeed exit numbering had been applied to 299 before the switch), please post if just for the purposes of edification!
(Data from OpenStreetMap)
I-5 and CA 99. 525+306=831.
Overlooked that one; when I was living up in that area, the 5/99 interchange utilized 5's numbers for the whole shooting match; apparently that's changed with the extension of the CA 99 freeway. Thanks to
1 for unearthing that piece of info -- that indeed would be the highest aggregate exit # within the state!
At the interchange between I-15 and US 89 in Farmington UT, the I-15 numbers are 324-325 and the US-89 numbers are 394-395. However, the ramp from 89 to 15 south is unnumbered, and there isn't a direct ramp from 89 south to 15 north. That movement requires using Park Lane, which is exit 395 on 89 and 325 on 15. So you could make a case that Utah gets up to 720.
Also, are we including single interchanges where three routes intersect? If we're allowing three routes, then you can add the Legacy Parkway to that Farmington interchange, which would get it up to 733.
Quote from: vdeane on June 12, 2018, 01:11:12 PM
Quote from: empirestate on June 12, 2018, 01:40:16 AM
I think in New York, if you allow that the Thruway interchange is part of the Exit 131 complex from NY 17, then that would be the winner. Adding the Thruway's exit number for NY 17, which is Exit 16, you get 147.
(And if you also add in the Woodbury toll barrier, which is located within the interchange, and for toll collection purposes is designated Exit 15, then you get 162.)
Because of how the Thruway interrupts the exit sequences of both I-87 and I-90, there's really no other competitive option in the state. I-495 gets up to Exit 71, but nothing intersects it that far east (and even if it did, it would only be able to add a handful of exits to the sum total).
I personally wouldn't, since I consider exit 131 to be specifically for NY 17/NY 32, with the ramps to the Thruway unnumbered, and since I wouldn't include the barrier.
The only consideration I'd add is that, since NY 17 exits off of itself here, the "mainline" continuing toward the Thruway ramps is itself, in a sense, an "exit". But that's a stretch.
Quote from: empirestate on June 12, 2018, 01:40:16 AM
I think in New York, if you allow that the Thruway interchange is part of the Exit 131 complex from NY 17, then that would be the winner. Adding the Thruway's exit number for NY 17, which is Exit 16, you get 147.
(And if you also add in the Woodbury toll barrier, which is located within the interchange, and for toll collection purposes is designated Exit 15, then you get 162.)
Because of how the Thruway interrupts the exit sequences of both I-87 and I-90, there's really no other competitive option in the state. I-495 gets up to Exit 71, but nothing intersects it that far east (and even if it did, it would only be able to add a handful of exits to the sum total).
If they ever convert the Thruway to mileage-based exits and keep the current mile-markers intact, then somewhere around Buffalo would likely be home to the highest number, no?
For Michigan it has to be 469 (I-94 and I-69 in Port Huron).
Quote from: 1 on June 12, 2018, 05:04:59 PM
Quote from: PurdueBill on June 12, 2018, 05:03:30 PM
Quote from: 1 on June 11, 2018, 08:03:29 PM
Some low ones:
Massachusetts: 84. Exit 44 on I-93 and Exit 40 on I-495. (I-495 doesn't have a numbered exit when it merges with I-95 in Salisbury.)
New Hampshire: Absolutely nothing qualifies. Interstate junctions are unnumbered in New Hampshire.
Vermont: Again, nothing qualifies. I-89 and I-93 are both unnumbered at I-91, I-189 doesn't have exit numbers, and the US route and state route freeways don't connect to the Interstates or to each other.
I'm pretty sure that I-93 is Exit 19 on I-91. For NH, I-393 is signed as Exit 15E on I-93 along with the US routes. Would that qualify? (Not that 19 and 15 are impressive, but they are something at least)
Even if I-93 is Exit 19 on I-91, I-93 is unnumbered at its terminus. Similarly, I-393 is unnumbered where it meets I-93, despite it being Exit 15E on I-93.
But at least it would give
something for Vermont and New Hampshire to have totals of 19 and 15 (19+nothing and 15+nothing). :D
New Hampshire really makes it hard. NH 101 at I-95 even skips having an exit number at all, even though I-95 has an exit number for 101. Can't they make it consistent somehow?
Quote from: dfilpus on June 12, 2018, 02:44:42 PM
North Carolina -
Western US 70/US 17 - 410 + 147 = 557
Eastern US 70/US 17 would be larger, but US 17 uses the US 70 exit number.
I imagine the next-highest would be I-40 at I-85 at the east end of the duplex: 163 + 259 = 422
Quote from: dfilpus on June 12, 2018, 02:44:42 PM
North Carolina -
Western US 70/US 17 - 410 + 147 = 557
Eastern US 70/US 17 would be larger, but US 17 uses the US 70 exit number.
US 64/I-95 - 464 + 138 = 602. Both our answers will change once I-87 and I-42 get going.
Quote from: thenetwork on June 12, 2018, 11:00:25 PM
If they ever convert the Thruway to mileage-based exits and keep the current mile-markers intact, then somewhere around Buffalo would likely be home to the highest number, no?
Here's hoping future exit numbers
don't use thruway mileage, and instead use the mileage of I-87 and I-90!
But if they did, the highest would probably be the thruway and I-390, since I-190 and I-290 both end at an unnumbered junction with I-90.
Quote from: spooky on June 12, 2018, 11:20:46 AM
Quote from: jon daly on June 11, 2018, 08:00:05 PM
Little Rhody's is 19. I-195 splits at I-95 and there is no exit number. The exit number for I-195 off on I-95 is 19.
Actually it is 20 because I-195 has a different exit number on I-95 SB.
19 is for Eddy St SB?
VA's is I-64/264/664 in Bowers Hill at 299 + 15 + 1 = 315, narrowly beating out I-64 / I-81 in Staunton at 221 + 81 = 308.
Quote from: thenetwork on June 12, 2018, 11:00:25 PM
If they ever convert the Thruway to mileage-based exits and keep the current mile-markers intact, then somewhere around Buffalo would likely be home to the highest number, no?
West of it; the last exit on the Thruway would be Exit 495 in Ripley. If only the Thruway's numbering were converted, then nothing else would add enough to the sum to beat 495.
Quote from: webny99 on June 13, 2018, 08:18:50 AM
But if they did, the highest would probably be the thruway and I-390, since I-190 and I-290 both end at an unnumbered junction with I-90.
Those unnumbered junctions would still result in a higher sum than Thruway/390, since that junction is only Exit 12 from I-390, and both 190 and 290 are more than 12 miles from there.
So, the 390 interchange would be 362+12=374. The 290 interchange would be 420+0; the 190 interchange would be 426+0.
Quote from: empirestate on June 13, 2018, 10:33:11 AM
Quote from: thenetwork on June 12, 2018, 11:00:25 PM
If they ever convert the Thruway to mileage-based exits and keep the current mile-markers intact, then somewhere around Buffalo would likely be home to the highest number, no?
West of it; the last exit on the Thruway would be Exit 495 in Ripley. If only the Thruway's numbering were converted, then nothing else would add enough to the sum to beat 495.
Quote from: webny99 on June 13, 2018, 08:18:50 AM
But if they did, the highest would probably be the thruway and I-390, since I-190 and I-290 both end at an unnumbered junction with I-90.
Those unnumbered junctions would still result in a higher sum than Thruway/390, since that junction is only Exit 12 from I-390, and both 190 and 290 are more than 12 miles from there.
So, the 390 interchange would be 362+12=374. The 290 interchange would be 420+0; the 190 interchange would be 426+0.
And if they gave NY 400 mileage based exit numbers including the endpoint at I-90, NY 400 would be 445 (428+17)
If NY went mile-based and the Thruway kept its mileage, it would be a tossup between I-90/I-390 and I-90/NY 400. I-390 would convert to exit 65, and NY 400 is about 65 miles away, so it comes down to the exact numbers and whether NY 400 would get numbers (and whether the terminus would be numbered; NY traditionally hasn't done this, but both I-99 and I-781 have numbered termini).
It would be I-90/I-390. 362+66=428.
Quote from: jp the roadgeek on June 13, 2018, 02:29:06 PM
It would be I-90/I-390. 362+66=428.
Exactly, I thought it went without saying that we'd
also use a mileage-based number for I-390 in this theoretical.
Quote from: formulanone on June 12, 2018, 08:58:16 AM
385 for Alabama, at I-65 and I-20/59 for exits 261 and 124, respectively.
Honorable mention with a total of 341 to I-65 @ I-565 for exits 340 and 1, respectively.
Quote from: clong on June 13, 2018, 04:56:58 PM
Quote from: formulanone on June 12, 2018, 08:58:16 AM
385 for Alabama, at I-65 and I-20/59 for exits 261 and 124, respectively.
Honorable mention with a total of 341 to I-65 @ I-565 for exits 340 and 1, respectively.
If they ever seriously extend I-565 towards US 31 in Decatur (http://www.decaturdaily.com/news/limestone_county/city-officials-ok-with-long-i--extension-delay/article_668402bc-4132-5a7f-aea3-562b7d786c5c.html), I'm not sure what they'd do about exit numbers...probably just leave them unnumbered.
Exit numbers aren't really used that much in public discourse and advertising in the area, since it's just a 20-mile route.
I-10 at I-75- Exit 296
I-75 at I-10 - Exit 435
Sum = 731
Though one would conclude I-10 at I-95 would be more but it totals to 714 a difference of 16 less.
Quote from: Thing 342 on June 13, 2018, 09:27:51 AM
VA's is I-64/264/664 in Bowers Hill at 299 + 15 + 1 = 315, narrowly beating out I-64 / I-81 in Staunton at 221 + 81 = 308.
Wisconsin's is even closer I-43/94/794 in Milwaukee is 310+72+1=383 I-90/94/WI30 in Madison is 240+138+3=381
Quote from: jp the roadgeek on June 13, 2018, 02:29:06 PM
It would be I-90/I-390. 362+66=428.
427. I-390's MP 65 is posted shortly before the NB deceleration lane begins and I'm pretty sure NY is a round down state. Thruway MP 428 is inside exit 54, so I could see either number being applied, and literally any contribution from NY 400 (should it gain numbers, especially at the terminus) would make it win.
Quote from: oscar on June 11, 2018, 11:54:25 PM
Hawaii's highest sum is at H-201's eastern junction (4) with H-1 (19) = 23.
Alaska doesn't do exit numbers, except for one freeway in Fairbanks that doesn't connect to any other freeways.
I think California's is in Redding, at the interchange of I-5 (678) and CA 44 (2) = 680. The I-5 interchange with CA 299 would be higher, except 299's exit numbering only starts east of I-5, with no number on 299 for its interchange with I-5. Similar situation with the US 101/CA 299 interchange, where US 101 has a numbered exit (716) but CA 299's exits onto US 101 are unnumbered.
One thing that keeps us low in California is that Eastern California doesn't have many freeways and that the longest roads in the state Both I-5 and US-101 don't have as many freeway exits.
Meanwhile, with hypothetical mile-based numbers for I-90 and I-87 following their true mileage, the highest sume for NY would be approximately 505 at the eastern I-90/I-87 junction (existing exit 1 for both, which would be approximately 348 for I-90 and approximately 157 for I-87).
Quote from: wxfree on June 11, 2018, 08:55:50 PM
Quote from: wriddle082 on June 11, 2018, 08:30:41 PM
The winner is south of Dallas, TX:
I-35E meets I-20 at Exit 418
I-20 meets I-35E at Exit 467
418+467=885
The exit to I-10 from I-69 is number 132. That plus I-10's 770 makes 902.
I didn't know I-69 had exit numbers, but I checked Street View and saw that it does. Google Maps doesn't have them labeled, but the tabs are on the signs (at least at I-10).
https://goo.gl/maps/eNVYtZGf5dn (https://goo.gl/maps/eNVYtZGf5dn)
132 miles from that point along the existing road is on the south side of Victoria.
It looks like Texas has the top two. Also above 800 miles to apparently come in fourth behind California is I-10 at I-610 east. I-10's 775 is enough to reach 801 when added to I-610's paltry 26.
Quote from: webny99 on June 13, 2018, 04:20:08 PM
Quote from: jp the roadgeek on June 13, 2018, 02:29:06 PM
It would be I-90/I-390. 362+66=428.
Exactly, I thought it went without saying that we'd also use a mileage-based number for I-390 in this theoretical.
No, since thenetwork specified only the Thruway changing, but also because even a mile-based I-390 doesn't get you close to the highest-numbered exit on a mile-based Thruway, which is 495 (or 494, if we truncate). If we're allowing intersecting highways that don't have numbered exits, then that's what would win.
Quote from: vdeane on June 13, 2018, 08:27:16 PM
Quote from: jp the roadgeek on June 13, 2018, 02:29:06 PM
It would be I-90/I-390. 362+66=428.
427. I-390's MP 65 is posted shortly before the NB deceleration lane begins and I'm pretty sure NY is a round down state. Thruway MP 428 is inside exit 54, so I could see either number being applied, and literally any contribution from NY 400 (should it gain numbers, especially at the terminus) would make it win.
But wouldn't US 219 be a higher sum even without gaining numbers? It's at mile 429. And if gaining numbers isn't necessary, what about all the highways west of US 219? What beats 495?
Quote from: empirestate on June 14, 2018, 02:00:14 AM
even a mile-based I-390 doesn't get you close to the highest-numbered exit on a mile-based Thruway, which is 495 (or 494, if we truncate). If we're allowing intersecting highways that don't have numbered exits, then that's what would win.
We're allowing
freeways that don't have exit numbers. Freeway-to-freeway was implied, if not outright specified, in the OP.
Quotewhat about all the highways west of US 219?
Within New York State, there are a grand total of
zero freeway-freeway interchanges west of I-90/US 219.
Quote from: webny99 on June 14, 2018, 08:22:02 AM
Quote from: empirestate on June 14, 2018, 02:00:14 AM
even a mile-based I-390 doesn't get you close to the highest-numbered exit on a mile-based Thruway, which is 495 (or 494, if we truncate). If we're allowing intersecting highways that don't have numbered exits, then that's what would win.
We're allowing freeways that don't have exit numbers. Freeway-to-freeway was implied, if not outright specified, in the OP.
Exit numbers were implied, which usually means freeways, but not always. However, some people were using examples where unnumbered exits are allowed; so, since non-freeways with numbered exits could have been allowed, we have to decide whether the same applies to non-freeways with unnumbered exits. Granted, it makes great sense to make that distinction–we just have to make it.
QuoteQuotewhat about all the highways west of US 219?
Within New York State, there are a grand total of zero freeway-freeway interchanges west of I-90/US 219.
But there are non-freeway routes (see above). We have to decide how to apply these cases.
Quote from: michravera on June 13, 2018, 08:51:24 PM
Quote from: oscar on June 11, 2018, 11:54:25 PM
Hawaii's highest sum is at H-201's eastern junction (4) with H-1 (19) = 23.
Alaska doesn't do exit numbers, except for one freeway in Fairbanks that doesn't connect to any other freeways.
I think California's is in Redding, at the interchange of I-5 (678) and CA 44 (2) = 680. The I-5 interchange with CA 299 would be higher, except 299's exit numbering only starts east of I-5, with no number on 299 for its interchange with I-5. Similar situation with the US 101/CA 299 interchange, where US 101 has a numbered exit (716) but CA 299's exits onto US 101 are unnumbered.
One thing that keeps us low in California is that Eastern California doesn't have many freeways and that the longest roads in the state Both I-5 and US-101 don't have as many freeway exits.
I'm seeing one in Hilt, CA at I-5 and Hilt Road. It's I-5 exit 796. So it's 796 + 0 (unnumbered) = 796, higher than any of the ones mentioned.
Quote from: Super Mateo on June 14, 2018, 11:51:56 AM
Quote from: michravera on June 13, 2018, 08:51:24 PM
Quote from: oscar on June 11, 2018, 11:54:25 PM
Hawaii's highest sum is at H-201's eastern junction (4) with H-1 (19) = 23.
Alaska doesn't do exit numbers, except for one freeway in Fairbanks that doesn't connect to any other freeways.
I think California's is in Redding, at the interchange of I-5 (678) and CA 44 (2) = 680. The I-5 interchange with CA 299 would be higher, except 299's exit numbering only starts east of I-5, with no number on 299 for its interchange with I-5. Similar situation with the US 101/CA 299 interchange, where US 101 has a numbered exit (716) but CA 299's exits onto US 101 are unnumbered.
One thing that keeps us low in California is that Eastern California doesn't have many freeways and that the longest roads in the state Both I-5 and US-101 don't have as many freeway exits.
I'm seeing one in Hilt, CA at I-5 and Hilt Road. It's I-5 exit 796. So it's 796 + 0 (unnumbered) = 796, higher than any of the ones mentioned.
What I said before:
Quote from: 1 on June 12, 2018, 07:15:38 AM
(Data from OpenStreetMap)
I-5 and CA 99. 525+306=831.
Maine would not qualify. Being I-95 only interchanges with I-295 adding them would be sum up a number less than I-95's last exit number before leaving the US.
Quote from: empirestate on June 14, 2018, 02:00:14 AM
But wouldn't US 219 be a higher sum even without gaining numbers? It's at mile 429. And if gaining numbers isn't necessary, what about all the highways west of US 219? What beats 495?
True; I didn't think of US 219 since that interchange is a little odd. Thankfully, signage is clear about the frontage roads being US 219. If US 219 were to get numbers in this scenario, and number that movement (which I'm not so sure of since it's basically the mainline), it would be 66.
Quote from: roadman65 on June 14, 2018, 05:41:32 PM
Maine would not qualify. Being I-95 only interchanges with I-295 adding them would be sum up a number less than I-95's last exit number before leaving the US.
Sure it does. I-95/I-395: 182+1 = 183
The eventual I-20/I-369 interchange in Marshall, TX should be a pretty big number, but it may not be as high as the I-20/I-35E and I-10/I-69 ones already posted.
Soooo close to having a marked exit number:
I-10(614) at Toll TX 130. 130 has no exit numbers for I-10 east or west. It likely would have been 497 for a grand total of 1111
iPhone
In Iowa, it's I-80 and US 61: 295+123=418.
If the Iowa DOT decided to make all of the Avenue of the Saints' exit numbers consistent, the interchange with I-35 would be 190+253=443. But for the time being, an exit number based on the mileage of US 18 is used at that interchange.
Quote from: Flint1979 on June 12, 2018, 11:55:16 PM
For Michigan it has to be 469 (I-94 and I-69 in Port Huron).
Too bad US-2 and M-28 don't have "exits" to I-75 (both have mile markers). They'd be in the 650 to 670 range.
In NJ the highest exit number would be the I-80 and Garden State Parkway interchange in Saddle Brook.
The GSP 159
I-80 @ 52
Sum- 211
Quote from: roadman65 on June 16, 2018, 11:40:31 AM
In NJ the highest exit number would be the I-80 and Garden State Parkway interchange in Saddle Brook.
The GSP 159
I-80 @ 52
Sum- 211
Quote from: bzakharin on June 12, 2018, 09:18:22 AM
Quote from: Roadsguy on June 12, 2018, 02:33:03 AM
Pennsylvania's largest sum is because of the way the Turnpike's and I-76's exit numbers are handled. The roads are one and the same for 326 miles until Valley Forge, after which both I-76 on the Schuylkill Expressway and I-276 on the Turnpike continue the exit numbers up to 351 and 358, respectively. Valley Forge is thus both Exit 326 of I-76 and Exit 326 of I-276, for a sum of 652. Quite a big number for state only about 300 miles across.
Correct me if I'm wrong, but there is no Exit 326 on the Schuylkill Expressway. The last exit is 327 and the Turnpike entrance is not marked as an exit.
New Jersey has Exit 354 on I-76 before NJ exit numbers kick in. Unfortunately it leads to Exit 1 of I-676 meaning the sum is only 355. Aside from that, the Garden State Parkway / I-80 interchange is 159+62 = 221 which is the maximum I believe.
Though totally accurate, many of us tend to not think of the Delaware River Port Authorities little stint of using PA mileage to sign a NJ exit.
Yes that is higher than the GSP/ I-80 Exchange being it is signed as such whether good or bad judgement it is signed.
Quote from: Nacho on June 11, 2018, 08:39:58 PM
For my native state of Indiana it's almost certainly where the Toll Road meets I-69: 144 + 356 = 500
I hated the renumbering of "classic" I-69's exits (the southern extension SHOULD have been designated as I-63, IMHO!), but somehow it is appropriate that the sum of these two is now 500, in the state that is the home to the World's Most Famous Race, the Indy 500!
For Kansas, it's in Kansas City at I-70 (Exit 411) and I-435 (Exit 12) for a total of 423. Narrowly beats I-70's interchange with I-635 a few miles away (418 + 4 = 422).
Quote from: jflick99 on June 17, 2018, 08:49:57 PM
For Kansas, it's in Kansas City at I-70 (Exit 411) and I-435 (Exit 12) for a total of 423. Narrowly beats I-70's interchange with I-635 a few miles away (418 + 4 = 422).
I-70 (Exit 366) and I-470 (Exit 183). 366+183=549.
Quote from: 1 on June 16, 2018, 11:44:49 AM
Quote from: roadman65 on June 16, 2018, 11:40:31 AM
In NJ the highest exit number would be the I-80 and Garden State Parkway interchange in Saddle Brook.
The GSP 159
I-80 @ 52
Sum- 211
Quote from: bzakharin on June 12, 2018, 09:18:22 AM
Quote from: Roadsguy on June 12, 2018, 02:33:03 AM
Pennsylvania's largest sum is because of the way the Turnpike's and I-76's exit numbers are handled. The roads are one and the same for 326 miles until Valley Forge, after which both I-76 on the Schuylkill Expressway and I-276 on the Turnpike continue the exit numbers up to 351 and 358, respectively. Valley Forge is thus both Exit 326 of I-76 and Exit 326 of I-276, for a sum of 652. Quite a big number for state only about 300 miles across.
Correct me if I'm wrong, but there is no Exit 326 on the Schuylkill Expressway. The last exit is 327 and the Turnpike entrance is not marked as an exit.
New Jersey has Exit 354 on I-76 before NJ exit numbers kick in. Unfortunately it leads to Exit 1 of I-676 meaning the sum is only 355. Aside from that, the Garden State Parkway / I-80 interchange is 159+62 = 221 which is the maximum I believe.
Ok, I wasn't going to bitch when someone first ignored my answer, but seriously now. Take me off your blocked list or whatever...
Reponse #6 or #7:
Quote
NJ has an oddball winner:
I-76 Exit 354 plus I-676 Exit 1 = 355
Quote from: jeffandnicole on June 17, 2018, 09:50:47 PM
Ok, I wasn't going to bitch when someone first ignored my answer, but seriously now. Take me off your blocked list or whatever...
Reponse #6 or #7:
Quote
NJ has an oddball winner:
I-76 Exit 354 plus I-676 Exit 1 = 355
Apologies, can't imagine how I didn't see it.
Ohio's mentioned above already: I-71 (247) + I-90 (170) + I-490 (1) = 418
Kentucky's is I-71/75 (185) + I-275 (84) = 269
Think Massachusetts would have a new (much higher) answer with their distance based exits conversion.
Now at the risk of creating a duplicate thread, what is the lowest sum of exits in your state? For Ohio, it's probably I-670 (2) + OH 315 (1) = 3. Theoretically, the one at I-71/I-75/US 50 should have a sum of 2, but exits on Fort Washington Way (I-71) aren't signed for some reason, so that one is out.
Tennessee: I-40 @ I-75 western junction: 368 + 84 = 452
Mississippi: I-55 @ I-69 @ I-269: 283 + 1 + 0 = 284 (when I-69 has numbered exits in the distant future this number will be higher) Exit 291 on I-55 surpasses this by 7.
Arkansas: I-40 @ I-30: 153 + 143 = 296
Quote from: Nacho on June 11, 2018, 08:39:58 PM
For my native state of Indiana it's almost certainly where the Toll Road meets I-69: 144 + 356 = 500
The 356 alone is higher than any other sum anywhere else in the state.
Quote from: SkyPesos on December 20, 2020, 04:36:39 PM
Think Massachusetts would have a new (much higher) answer with their distance based exits conversion.
Massachusetts would go to 172 when MA 2 (with exit 127) and I-95 (with exit 45) are renumbered.
For California, I-5(678) and CA 44(2). CA 44 is mostly non-freeway, but its west end in the I-5 area is freeway with exit numbers.
Someone from Texas can come up with a higher sum in Houston, along I-10.
Quote from: Ben114 on December 20, 2020, 06:30:56 PM
Quote from: SkyPesos on December 20, 2020, 04:36:39 PM
Think Massachusetts would have a new (much higher) answer with their distance based exits conversion.
Massachusetts would go to 172 when MA 2 (with exit 127) and I-95 (with exit 45) are renumbered.
Found a higher one: MA 2 (113) and I-495 (78), with a sum of 191.
Quote from: wriddle082 on June 11, 2018, 08:30:41 PM
The winner is south of Dallas, TX:
I-35E meets I-20 at Exit 418
I-20 meets I-35E at Exit 467
418+467=885
I-69 has new, higher exit numbers, so I-69 meets I-10 at exit 132. On I-10, the exit number is 770. So 132 + 770 = 902.
Illinois's highest sum is probably the junction of I-80 and I-57, the only Interstate whose exit numbers reach the 300's. There, you have 345 + 151 = 496.
Quote from: oldparoadgeek on June 12, 2018, 02:37:46 AM
Pa's is at the Junction Of I-81 Exit 194 and I-476 Exit 131 near Scranton for a total of 325. It could possibly !-76 and I-95 In Phila but I dont think there is a direct connection between them
There indeed is a direct connection, and it adds to 370. But like you said above, 80 and 81 is the highest - 411.
Quote from: Thing 342 on June 13, 2018, 09:27:51 AM
VA's is I-64/264/664 in Bowers Hill at 299 + 15 + 1 = 315, narrowly beating out I-64 / I-81 in Staunton at 221 + 81 = 308.
I was wondering if both routes must have exit numbers to be eligible for this game. That is, if one road has no exit number, then it might be assigned zero, such that Virginia's highest would probably be the northernmost exit on I-81 (Exit 323 + 0 = 323). I could see that being deemed "too easy," though, or alternatively too ambiguous in the context of there being those rare exits in a few places that are actually numbered Exit 0.
Quote from: sparker on June 12, 2018, 05:53:01 PM
Quote from: 1 on June 12, 2018, 07:15:38 AM
Quote from: sparker on June 12, 2018, 02:52:17 AM
Within CA, the highest-numbered double-Interstate interchange would be I-5 (exit 522) with I-80 (exit 86), rendering a total of 608. Of course, as has been previously stated, I-5 with CA 44 is somewhat higher (680); that's the farthest north freeway-to-freeway interchange in CA with exit numbers for both intersecting routes. Of course, it would have been considerably higher prior to the rerouting of CA 299 in the Redding area several years back; if anyone has any pix of a EB CA 299 exit number at the I-5 interchange (if indeed exit numbering had been applied to 299 before the switch), please post if just for the purposes of edification!
(Data from OpenStreetMap)
I-5 and CA 99. 525+306=831.
Overlooked that one; when I was living up in that area, the 5/99 interchange utilized 5's numbers for the whole shooting match; apparently that's changed with the extension of the CA 99 freeway. Thanks to 1 for unearthing that piece of info -- that indeed would be the highest aggregate exit # within the state!
Another one missed: US 101 at CA 299. 716 + 1 = 717.
I note OSM doesn't show an exit number for 299 at 101 itself, but per CalTrans rules, it would be westbound's 1.
Oregon: I-5 @ OR 62 (presumptive future): 30+1=31
I-5 @ OR 58 (presumptive): 188+1=189
I-5 @ I-105/OR 126: 194+4=198
I-5 @ OR 569: 195+12=207
I-5 @ OR 22/99EB: 253+1=254
I-5 @ I-205 (implied; I-205's not signed): 288+1=289
I-5 @ OR 217 (implied; OR 217's not signed): 292+8=300
I-5 @ I-405 (implied; SB 405 not signed, but NB @ Harbor within interchange is): 299+1=300
I-5 @ I-84/US 30 (implied; 84 not signed and WB 1 is @ Lloyd Blvd): 301+1=302
I-5 @ I-405/US 30 (implied; 405 not signed...): 302+4=306
I-84/US 30 @ I-205, Gateway: 6+21=27
I-84/US 30 @ I-205, Maywood Park: 9+22=31
I-205 @ OR 213 (presumptive): 10+1=11
I-205 @ OR 213 and 224 (presumptive): 13+11+5=29 (owing to 213's 0 being at Airport Way and not at I-205 or in Salem)
I-405 @ US 26: 1+74=75
I-405 @ US 30 (implied; also, this is the '0' for this portion of US 30): 3+1=4
US 26 @ OR 6 (presumptive): 53+51=104
US 26 @ OR 217 (implied; NB 217 not signed): 69+1=70
US 26 @ OR 35 (presumptive): 59+59=118
US 97 @ OR 58 (presumptive): 195+85=280
(Digging up what US 101's at US 26 and OR 18, as well as OR 99E at 224 is not worth the effort)
With all that noted: I-5 @ I-405/US 30 wins.
Applying CalTrans rules (ie, each route getting exit numbers based on distance from their 0, and not from the route's respective highway's 0):
I-5 @ OR 62, 58, 569, 217, I-205, 405 (south): No change.
I-5 @ I-105/OR 126 (presuming I-105 adopts OR 126's): 194+57=251
I-5 @ OR 22/99EB: 253+57=310
I-405 @ US 30 (setting 0 in Astoria instead of Portland): 4+95=99
I-5 @ I-405/US 30: 302+4+100=406*
I-5 @ I-84/US 30: 300+1+102=403*
*Note: This is assuming that US 30's would be able to supercede an Interstate's. As it's very unlikely, continuing US 30's sequence over I-84 is pointless.
Finally: US 26 @ OR 35: 135+1=136**
**This puts OR 35's 0 on Mt Hood, not at the Ross Island Bridge where it currently is.
Tentatively, I-5 @ OR 22/99EB wins this one.
Quote from: Bickendan on December 21, 2020, 08:32:54 AM
Another one missed: US 101 at CA 299. 716 + 1 = 717.
I note OSM doesn't show an exit number for 299 at 101 itself, but per CalTrans rules, it would be westbound's 1.
Caltrans disobeys those supposed "rules": in both directions, it assigns exit number 1 to the CA 299/Guintoli Lane interchange, and no CA 299 exit number at all to its interchange with US 101.
https://dot.ca.gov/-/media/dot-media/programs/safety-programs/documents/exit/f0017877-299-a11y.pdf
That conforms to the signage (or lack thereof) I saw last time I was up there.
The Cal-NExUS exit list also says that CA 299 has no exit number for its junction with I-5.
Not worth mentioning, but West Virginia only has a handful of them:
I-77 at I-64 south of Beckley: 40+121 = 161
I-64 at I-77 in Charleston: 59+101 = 160
I-77 at I-79 just north of there: 104+0 = 104
I-70 at I-470 in Wheeling is not marked for I-470. But if it were, it would be Exit 6. 5A+6 = 11
I-64 at US-52 in West Huntington is not marked for US-52. But US-52 is technically a Super 2 here, albeit a very short one. It has 3 exits, and I-64 could be marked as Exit 1C: 6+1 = 7
Montana only has 3 mainline to mainline interchanges and two other freeway to freeway interchanges.
#1: I-94 terminus & I-90 near Billings: 0+456=456
#2: I-90 & I-15 east of Butte: 227+129=356
#3: I-90 & I-15 west of Butte: 219+121=340
Quote from: Dirt Roads on December 21, 2020, 09:51:29 AM
Not worth mentioning, but West Virginia only has a handful of them:
I-77 at I-64 south of Beckley: 40+121 = 161
I-64 at I-77 in Charleston: 59+101 = 160
I-77 at I-79 just north of there: 104+0 = 104
I-70 at I-470 in Wheeling is not marked for I-470. But if it were, it would be Exit 6. 5A+6 = 11
I-64 at US-52 in West Huntington is not marked for US-52. But US-52 is technically a Super 2 here, albeit a very short one. It has 3 exits, and I-64 could be marked as Exit 1C: 6+1 = 7
You forgot about the I-68/I-79 interchange in Morgantown: 148+0= 148
Quote from: Bickendan on December 21, 2020, 08:32:54 AM
Quote from: sparker on June 12, 2018, 05:53:01 PM
Quote from: 1 on June 12, 2018, 07:15:38 AM
Quote from: sparker on June 12, 2018, 02:52:17 AM
Within CA, the highest-numbered double-Interstate interchange would be I-5 (exit 522) with I-80 (exit 86), rendering a total of 608. Of course, as has been previously stated, I-5 with CA 44 is somewhat higher (680); that's the farthest north freeway-to-freeway interchange in CA with exit numbers for both intersecting routes. Of course, it would have been considerably higher prior to the rerouting of CA 299 in the Redding area several years back; if anyone has any pix of a EB CA 299 exit number at the I-5 interchange (if indeed exit numbering had been applied to 299 before the switch), please post if just for the purposes of edification!
(Data from OpenStreetMap)
I-5 and CA 99. 525+306=831.
Overlooked that one; when I was living up in that area, the 5/99 interchange utilized 5's numbers for the whole shooting match; apparently that's changed with the extension of the CA 99 freeway. Thanks to 1 for unearthing that piece of info -- that indeed would be the highest aggregate exit # within the state!
Another one missed: US 101 at CA 299. 716 + 1 = 717.
I note OSM doesn't show an exit number for 299 at 101 itself, but per CalTrans rules, it would be westbound's 1.
Oregon: I-5 @ OR 62 (presumptive future): 30+1=31
I-5 @ OR 58 (presumptive): 188+1=189
I-5 @ I-105/OR 126: 194+4=198
I-5 @ OR 569: 195+12=207
I-5 @ OR 22/99EB: 253+1=254
I-5 @ I-205 (implied; I-205's not signed): 288+1=289
I-5 @ OR 217 (implied; OR 217's not signed): 292+8=300
I-5 @ I-405 (implied; SB 405 not signed, but NB @ Harbor within interchange is): 299+1=300
I-5 @ I-84/US 30 (implied; 84 not signed and WB 1 is @ Lloyd Blvd): 301+1=302
I-5 @ I-405/US 30 (implied; 405 not signed...): 302+4=306
I-84/US 30 @ I-205, Gateway: 6+21=27
I-84/US 30 @ I-205, Maywood Park: 9+22=31
I-205 @ OR 213 (presumptive): 10+1=11
I-205 @ OR 213 and 224 (presumptive): 13+11+5=29 (owing to 213's 0 being at Airport Way and not at I-205 or in Salem)
I-405 @ US 26: 1+74=75
I-405 @ US 30 (implied; also, this is the '0' for this portion of US 30): 3+1=4
US 26 @ OR 6 (presumptive): 53+51=104
US 26 @ OR 217 (implied; NB 217 not signed): 69+1=70
US 26 @ OR 35 (presumptive): 59+59=118
US 97 @ OR 58 (presumptive): 195+85=280
(Digging up what US 101's at US 26 and OR 18, as well as OR 99E at 224 is not worth the effort)
With all that noted: I-5 @ I-405/US 30 wins.
Applying CalTrans rules (ie, each route getting exit numbers based on distance from their 0, and not from the route's respective highway's 0):
I-5 @ OR 62, 58, 569, 217, I-205, 405 (south): No change.
I-5 @ I-105/OR 126 (presuming I-105 adopts OR 126's): 194+57=251
I-5 @ OR 22/99EB: 253+57=310
I-405 @ US 30 (setting 0 in Astoria instead of Portland): 4+95=99
I-5 @ I-405/US 30: 302+4+100=406*
I-5 @ I-84/US 30: 300+1+102=403*
*Note: This is assuming that US 30's would be able to supercede an Interstate's. As it's very unlikely, continuing US 30's sequence over I-84 is pointless.
Finally: US 26 @ OR 35: 135+1=136**
**This puts OR 35's 0 on Mt Hood, not at the Ross Island Bridge where it currently is.
Tentatively, I-5 @ OR 22/99EB wins this one.
If we're going by what's signed in the field -- thereby excluding all unnumbered exits -- I-5/OR-22/OR-99EB wins with 254.
I really wish Oregon would just number exits at the termini.
In Maryland, I-95 (64) + I-695 (33) =97.