Longest string of consecutive *state-level highway* exits?

[DJ Particle]

To answer some questions:

"No local control" means no routes that aren't in the logs as state highways.
ONLY state highways...if there's a concurrency with an Interstate or US Highway, it doesn't count.  😊

[jeffandnicole]

I-95(12):
MD 43
MD 152
MD 24
MD 543
MD 22
MD 155
MD 222
MD 272
MD 279
DE 896
DE 273
DE 1/7/58

I wish I could include DE 141 but it has the same exit number (5 A,B,C) as I-295.

The split itself isn't a numbered exit, only the exits for DE 141.  On some mapping and GPS devices it'll claim I-295 is Exit 5, but it's not.  (You especially see this on 295 South approaching 295 - some motorists will get in the exit lane for Exit 5 (141) then quickly merge back over at the last second realizing it's not correct. MapQuest was a frequent violator of this.)

To further that point that the 95/295 split isn't numbered, the 95/495 split isn't numbered either, and the exit for DE 4 is Exit 6.

[BrianP]

The split itself isn't a numbered exit, only the exits for DE 141.  On some mapping and GPS devices it'll claim I-295 is Exit 5, but it's not. 

AFAIK the I-295 exit being unnumbered is still mostly the case.  But I did find one place where exit 5C is signed on I-95 south.  It looks like that is a recent sign replacement. 
https://goo.gl/maps/nQALcCyiK1dikPML7

So I'm surprised with the interchange work being done for DE 141 that there is not new signage on NB I-95 to sign I-295 as exit 5C.  I guess it's because not all of the exit signage for I-295 was replaced as part of this project. 

[hbelkins]

How are Virginia's secondary routes and West Virginia's county routes classified for purposes of this exercise? They're state-maintained, but with a different signage system than the primary state routes.

[Ben114]

Kind of weak, but I-495 in MA has a chain of four.

17: MA 140
18: MA 126
19: MA 109
20: MA 85

[US 89]

Utah’s big winner looks to be I-15 in Davis and Weber County, with 9 or 10 in a row depending on how you count it:

(324 - SR 67/Legacy Parkway)
325 - SR 225/Park Lane
328 - SR 273/200 North
330 - SR 126/Layton Parkway
331 - SR 232/Hill Field Rd
332 - SR 108/Antelope Drive
334 - SR 193
335 - SR 103/650 North
338 - SR 97/5600 South
339 - SR 26/Riverdale Road

The reason 324 is in question is because the northbound exit with the same number is US 89 and occurs within the same interchange complex, but the Legacy junction is clearly north of the 89 junction. Also worth noting that UDOT plans to build an interchange at 1800 North in Sunset, which would likely involve an extension of SR 37 to bring the consecutive interchange count to 10/11.

There’s a chain of 15 exits on I-15 in Utah and Salt Lake Counties that are all non-interstate state routes, but it doesn’t seem to count for this thread because of the US 89 concurrency in the middle.

[bassoon1986]

I'm surprised for Louisiana that the highest string I can find is 9. It's a very heavy SR state. But a fair amount of US highway interchanges that interrupted chains.

I-10
Exit 109 - LA 328
Exit 115 - LA 347
Exit 121 - LA 3177
Exit 127 - LA 975
Exit 135 - LA 3000
Exit 139 - LA 77
Exit 151- LA 415
Exit 153- LA 1
Exit 155- LA 30

I-55
Exit 32- LA 3234
Exit 36- LA 442
Exit 40- LA 40
Exit 46- LA 16
Exit 50 - LA 1048
Exit 53- LA 10
Exit 57- LA 440
Exit 61- LA 38
Exit 1- MS 584

I'm going to take a stab at Texas next. There's good potential there.


iPhone

[bassoon1986]

Texas only has a string of 8:

Southbound on I-69E
Exit 49- FM 1762
Exit 48- SH 186
Exit 47- FM 3168
Exit 45- FM 490
Exit 44- Spur 56
Exit 42B- Spur 112
Exit 39- FM 1018
Exit 38- Spur 413/FM 2629


Arkansas's longest is 9 on Interstate 30:
Exit 46- AR 19
Exit 54- AR 51
Exit 63- AR 53
Exit 69- AR 26
Exit 73- AR 8/AR 51
Exit 78- AR 7
Exit 83- AR 283
Exit 91- AR 84
Exit 97- AR 84


iPhone

[Revive 755]

If we are counting lettered routes in Missouri on the same tier as numbered state routes, I would think Missouri would be up there.  After checking a few I'm so sure.

I-44
* Route AH (Exit 242)
* MO 47
* MO 30 /Route WW/Route AB
* Route JJ/Route W
* MO 185 (Exit 226)
* MO 185/Route D (Exit 225)
* Route N/Route C/Route J
* Route H
* Route UU
* MO 19
* Route F
* MO 8/MO 68
* Route V

Also for I-44:
* MO 17
* MO 7 Route P
* MO 133/Route AB
* Route T
* Route F

I-55
* Route TT (Exit 165)
* Route DD/Route OO (Exit 162)
* Route Y
* Route O
* MO 32/Route A/Route B
* Route M/Route N/Route J
* Route Z
* Route M
* MO 51
* Route B
* Route KK
* Route E

[GCrites]

How are Virginia's secondary routes and West Virginia's county routes classified for purposes of this exercise? They're state-maintained, but with a different signage system than the primary state routes.

I would say that since those WV routes are state funded, have no local control (except for city streets) and state maintained that they have to be included. It's kind of a strange case as compared to other states. Are there any property tax-funded road levies at the local level in WV at all?

[HazMatt]

For NC it looks like 7 is the longest on I-95.

Exit 141 - NC 43
Exit 145 - NC 4 / NC 48
Exit 150 - NC 33
Exit 154 - NC 481
Exit 160 - NC 561
Exit 168 - NC 903
Exit 171 - NC 125

[webny99]

Just state highways, no local control, US, or Interstate highways.  Let's find the longest chain!

I was curious about the bolded phrase, so I looked up one of your examples. Apparently, "no local control" does NOT mean what I thought it meant. 

Would be interested in some clarification on this.

[DJ Particle]

Just state highways, no local control, US, or Interstate highways.  Let's find the longest chain!

I was curious about the bolded phrase, so I looked up one of your examples. Apparently, "no local control" does NOT mean what I thought it meant. 

Would be interested in some clarification on this.

"No local control" means no routes that aren't in the logs as state highways.

[webny99]

Just state highways, no local control, US, or Interstate highways.  Let's find the longest chain!

I was curious about the bolded phrase, so I looked up one of your examples. Apparently, "no local control" does NOT mean what I thought it meant. 

Would be interested in some clarification on this.

"No local control" means no routes that aren't in the logs as state highways.

OK, gotcha. I was thinking about "local control" as being the destinations mentioned on signage, like W. Harwich and Dennis Port in your example. Therefore, my original thought was that we were limited to exits like this - state route shields only!

[Eth]

If we count Puerto Rico as a state equivalent, you can get a very, very long string. For instance, assuming the Wikipedia exit list for PR 52 is correct, there appears to be a string of about 20 consecutive exits to territorial numbered highways. (They use four different styles of shields, but all of them are part of the same island-wide numbering system.)

[ClaytonCarte]

I found a chain of six exits on I-85 in Georgia over the most northern twenty five miles:

154: SR 63
160: SR 51
164: SR 320
166: SR 106 / SR 145
173: SR 17
177: SR 77

- - 179: GA / SC state line - -

Continuing north into South Carolina, the chain continues for an additional five exits (possibly only two).

1: SC 11
2: SC 59
*4: To SC 243*
11: SC 24 / To SC 243
14: SC 187

[DandyDan]

In Nebraska, all the cities and villages next to I-80 get a Connecting Link highway to I-80. This, plus some with a number, plus the fact US 385 doesn't get an exit, means there are 13 in a row going eastbound on I-80 from the Wyoming border.

Exit 1 L-53B to Pine Bluffs, WY
Exit 8 L-53C Bushnell
Exit 20 NE 71 South Kimball
Exit 22 NE 71 North
Exit 29 L-53A Dix
Exit 38 L-17B Potter
Exit 48 L-17C
Exit 55 NE 19 Sidney
Exit 59 L-17J Sidney
Exit 69 L-17E Sunol
Exit 76 L-17F Lodgepole
Exit 85 L-25A Chappell
Exit 95 NE 27 Julesburg, CO

[JMoses24]

I-275 in Kentucky has four:

Exit 82 KY 1303 (known as Turkeyfoot Rd)
Exit 80 KY 17
Exit 79 KY 16
Exit 77 KY 9

If one were to include state route numbers not signed from the interstate, then Exit 76 for KY 2238, 3 Mile Road also counts for eastbound 275.

[cl94]

NY's winner is probably I-88 with 10. A whopping 3 exits are not signed for parallel NY 7 or another state route and only one of those has a US route. Central New York (like much of the state) is also generally devoid of US routes.

Exit 6: NY 79
Exit 7: NY 41
Exit 8: NY 206
Exit 9: NY 8
Exit 10: NY 7
Exit 11: NY 357
Exit 12: NY 7
Exit 13: NY 205
Exit 14 (NB only): NY 28 south
Exit 15: NY 23/NY 28 south

If Exit 5 was signed for NY 7, there would be a continuous string from 1 to 15. If 5, 16, and 18 were signed for NY 7 (only 4 of the 12 NY 7 exits are directly to 7, most connect via unsigned state routes or county routes), there would be a string from 1 to 23 (24 is US 20/NY 7).