While on my recent trip to LA, as we drove through each city I started thinking about the exit numbers on each of the interstates in a given city. It made me curious—what is the range of exit numbers for each major city (meaning any city with a population over 100,000 unless there aren't any that size—in that case, your state's capital and two other largest cities.)
I'll start two show you what I mean....and I'll use my adopted home state of Texas (a big one to start with.)
Houston:
Interstate 10: Exits 740-800
Interstate 45: Exits 25-100 (including Conroe)
Interstate 69: Exits 104-157
San Antonio:
Interstate 10: Exits 550-590
Interstate 35: Exits 140-172
Interstate 37: Exits 125-142
Dallas:
Interstate 20: Exits 457-490
Interstate 30: Exits 30-70
Interstate 35E: Exits 418-467
Interstate 45: Exits 268-284
Austin:
Interstate 35: Exits 220-265
Ft. Worth:
Interstate 20: Exits 450-453
Interstate 30: Exits 1-26
Interstate 35W: Exits 39-85
El Paso:
Interstate 10: Exits 6-35
Amarillo:
Interstate 27: Exits 106-123
Interstate 40: Exits 60-87
Lubbock:
Interstate 27: Exits 1-12
Corpus Christi:
Interstate 37: Exits 1-17
Interstate 69E: Exits 140-149
Rio Grande Valley:
Interstate 2: Exits
Interstate 69E: Exits 0-56
Interstate 69C: Exits 1-17
Baltimore:
I-83: 1-10 (these don't correspond to I-83's mile markers due to its truncation to Fayette Street)
I-95: 50-61 (again, slightly off from the mile markers in the area of the Fort McHenry Tunnel)
I-395: unnumbered
I-695: 1
I-895: 7-14
Annapolis:
I-595 (US 50): 22-24
Cumberland:
I-68: 42-45
Hagerstown:
I-70: 26-32
I-81: 4-8
Frederick:
I-70: 52-56
Sticking to strict definition of city limits:
Indianapolis
I-65: 103-124
I-69: 158-163, 200-201
I-70: 69-91
I-74: 73, 94
I-465: 2-14, 17-23, 27, 33-40, 44-49, 53
Fort Wayne
I-69: 102-116
I-469: 25-31
Evansville
I-69: 0-3, 7
South Bend
I-80/90: 72-77
Minneapolis
94: 226-235
35W: 11-22
394: 7-9
St. Paul
94: 237-248
35E: 103B-110A
Duluth
35: 249-259
Rochester
US 52: 47-60
Bloomington
494: 1-10
Portland:
I-5: 294-308
I-84: 1-10
I-205: 16-24
Salem:
I-5: 249-258
Eugene:
I-5: 191-195
Gresham:
I-84: 13
Hillsboro and Bend don't have interstates.
Yeah, we don't have a lot of interstates in Oregon.
In just the cities.
Detroit:
I-75 - exits 42-59
I-94: exits 210-224
I-96: exits 179-192
Grand Rapids:
I-96: exits 33-38
I-196: exits 73-79
Warren:
I-696: exits 21-22 and 24-26
Lansing:
I-96: exits 101-104
I-496: exits 3-8 and exit 11
Flint:
I-69: exit 131 and exits 135-139
I-75: exit 116
I-475: exits 5-11
Kalamazoo:
I-94: exits 78-80
NY is different than most thanks to being still sequential-based (for now, though that's slowly changing).
Rochester, NY's numbering structure is as follows:
I-90 (Thruway): 44-47
I-490: 1-29
I-390: 10-20
NY 390: 20-27
I-590: 1-5
NY 590: 5-11
Unnumbered: NY 104, NY 531, Inner Loop
So all exit numbers from 1-27 exist on at least two different routes, while 10 and 11 exist on three different routes.
California
San Francisco
I-280 - 50-57
I-80 - 1-4B
Oakland
I-80 - 8A-8B
I-580 - 19A-30
I-880 - 35-46B
San Jose
I-280 - 1A-9
I-680 - 1A-6
I-880 - 1A-7
Sacramento
I-80 - 85-93
I-5 - 510-525B, plus airport exit nearby is 528
US 50 (hidden I-305) - 1-5
Business 80 (portion that may be part of I-305/was built in 1960s as I-80/US 99E) - 6-7B
San Diego
I-5 - 1-5A (San Ysidro), 12-36
I-8 - 1-10
I-805 - 1A-2 (San Ysidro), 11A-33A
Route 15 and I-15 - 1A-26 (currently signed Interstate portion starts at Exit 6B)
Route 905 (future interstate?) - 1-9 (runs entirely in San Ysidro district)
Los Angeles
I-5 - 132-144B, then after Glendale/Burbank, 149-162
I-10 - 2B-19
I-105 - 1A-2B, then 7A-9
I-110 - 1A-4, then 9-24A (the Four-Level, where southbound signage for I-110 begins)
I-210 - 1A-14
I-405 - 37B-38B, then 48-49A, then 53A-55, then 57A-72
Long Beach
I-405 - 24B-29, 30B-32C
I-605 - 2A-2B
I-710 - 1A-8
Irvine
I-5 - 92-100
I-405 - 1A-8
Santa Ana
I-5 - 104A-107A
Anaheim
I-5 - 109-113C
Riverside
I-215 - 27B-36
San Bernardino
I-10 - 73-74
I-15 - 123
I-215 - 41-54B
Stockton
I-5 - 468-481
Sticking to city limits for NY (as others seem to be doing):
New York:
-I-78: 1-5
-I-87: 1-14
-I-95: 1A-14
-I-278: 3-54
-I-478: not numbered, but I-278 exit 26 has a ramp from I-478
-I-678: A-D, 1-19
-I-878: 1-2
-I-295: 1-12
-I-495: 13-32
-I-695: not numbered
Buffalo:
-I-190: 1-14
Yonkers:
-I-87: 1-6A
Rochester:
-I-390: 18
-I-490: 10-21
-I-590: 4-5
Syracuse (present):
-I-81: 16A-24
-I-481: 1
-I-690: 8-16
Syracuse (future):
-I-81: 81-82
-I-690*: 6-12
Albany**:
-I-87: 23-24, 1
-I-90: 24, 1-6A
-I-787: 1-5
*Assuming the numbers and mileage on NY 690/I-690 reset at Thruway exit 39, as appears will be the case.
**Technically not 100,000, but just below, and it would feel weird to omit it given the size of the Capital District (the metro area is larger than that of Syracuse, for instance) and it's the state capital. Also, the effects of the Thruway are fun to see.
I'll do CT
Hartford
I-84: 44-52
I-91: 27-34
US 5/CT 15: 86-89
New Haven
I-91: 1-8
I-95: 44-50
CT 15: 59
Bridgeport
I-95: 25-29
CT 8/25: 1A-2B
Waterbury
I-84: 18-25A
CT 8: 27-32
Stamford
I-95: 5-8
Quote from: NWI_Irish96 on November 23, 2024, 10:06:00 AMSticking to strict definition of city limits:
Quote from: Flint1979 on November 23, 2024, 11:22:17 AMIn just the cities.
Quote from: vdeane on November 23, 2024, 03:14:34 PMSticking to city limits for NY (as others seem to be doing):
To be fair, using "city limits" in Texas is the equivalent of using metro area in other parts of the country.
Quote from: Flint1979 on November 23, 2024, 11:22:17 AMIn just the cities.
(Michigan)
You left out the 4th largest city in the state, Sterling Heights. Which has only 1/2 of an exit in it, 17A from M-53. (17B is across the line in Shelby Township.)
Quote from: GaryV on November 24, 2024, 08:18:18 AMQuote from: Flint1979 on November 23, 2024, 11:22:17 AMIn just the cities.
(Michigan)
You left out the 4th largest city in the state, Sterling Heights. Which has only 1/2 of an exit in it, 17A from M-53. (17B is across the line in Shelby Township.)
Sterling Heights don't have an interstate highways though.
Boston
I-90
131
133
134A
134B
134C
135
137
I-93
12
13A
13B
14
15A
15B
16
17A
17B
18
19
Worcester
I-290
14
15
16
17
18
19
20
21
22
23
I-190
1
2
3
Springfield
I-91
1
2
3
4
5A
5B
6
7
8
I-291
1
2
3
4
5
Lowell
I-495
89C
91
Lawrence
I-495
100
102
103A
103B
Fall River
I-195
11
12
13
14A
14B
New Bedford
I-195
24
25
26
27
28
Chicopee
I-91
9
I-391
1A
1B
2
3
4
Holyoke
I-91
12
14
15
I-391
5
6A
6B
I-291
6
7
Quote from: webny99 on November 23, 2024, 02:11:10 PMNY is different than most thanks to being still sequential-based (for now, though that's slowly changing).
Rochester, NY's numbering structure is as follows:
I-90 (Thruway): 44-47
I-490: 1-29
I-390: 10-20
NY 390: 20-27
I-590: 1-5
NY 590: 5-11
Unnumbered: NY 104, NY 531, Inner Loop
So all exit numbers from 1-27 exist on at least two different routes, while 10 and 11 exist on three different routes.
That's one of the things I remember from when I used to go on road trips from Louisiana to Woodstock Connecticut with a couple of friends back in like 2008-2010. I did not like the sequential exit numbers in NY, NJ, MA, and CT. Made it hard to gauge how far it was from exit to exit or to our destination. The first time we went I remember how long it felt to drive across CT in I-84 knowing we needed exit 64 or something and realizing that it meant it was the 64th exit and not 64 miles away.
Quote from: TheStranger on November 23, 2024, 02:24:05 PMCalifornia
San Francisco
I-280 - 50-57
I-80 - 1-4B
Oakland
I-80 - 8A-8B
I-580 - 19A-30
I-880 - 35-46B
San Jose
I-280 - 1A-9
I-680 - 1A-6
I-880 - 1A-7
Sacramento
I-80 - 85-93
I-5 - 510-525B, plus airport exit nearby is 528
US 50 (hidden I-305) - 1-5
Business 80 (portion that may be part of I-305/was built in 1960s as I-80/US 99E) - 6-7B
San Diego
I-5 - 1-5A (San Ysidro), 12-36
I-8 - 1-10
I-805 - 1A-2 (San Ysidro), 11A-33A
Route 15 and I-15 - 1A-26 (currently signed Interstate portion starts at Exit 6B)
Los Angeles
I-5 - 132-144B, then after Glendale/Burbank, 149-162
I-10 - 2B-19
I-105 - 1A-2B, then 7A-9
I-110 - 1A-4, then 9-24A (the Four-Level, where southbound signage for I-110 begins)
I-210 - 1A-14
I-405 - 37B-38B, then 48-49A, then 53A-55, then 57A-72
Long Beach
I-405 - 24B-29, 30B-32C
I-605 - 2A-2B
I-710 - 1A-8
Irvine
I-5 - 92-100
I-405 - 1A-8
Santa Ana
I-5 - 104A-107A
Anaheim
I-5 - 109-113C
Riverside
I-215 - 27B-36
San Bernardino
I-10 - 73-74
I-15 - 123
I-215 - 41-54B
Stockton
I-5 - 468-481
Nice. I knew California would be even more of an undertaking than Texas being the only state with as many larger cities (and freeways.)
Quote from: achilles765 on November 24, 2024, 03:52:44 PMQuote from: TheStranger on November 23, 2024, 02:24:05 PMCalifornia
San Francisco
I-280 - 50-57
I-80 - 1-4B
Oakland
I-80 - 8A-8B
I-580 - 19A-30
I-880 - 35-46B
San Jose
I-280 - 1A-9
I-680 - 1A-6
I-880 - 1A-7
Sacramento
I-80 - 85-93
I-5 - 510-525B, plus airport exit nearby is 528
US 50 (hidden I-305) - 1-5
Business 80 (portion that may be part of I-305/was built in 1960s as I-80/US 99E) - 6-7B
San Diego
I-5 - 1-5A (San Ysidro), 12-36
I-8 - 1-10
I-805 - 1A-2 (San Ysidro), 11A-33A
Route 15 and I-15 - 1A-26 (currently signed Interstate portion starts at Exit 6B)
Los Angeles
I-5 - 132-144B, then after Glendale/Burbank, 149-162
I-10 - 2B-19
I-105 - 1A-2B, then 7A-9
I-110 - 1A-4, then 9-24A (the Four-Level, where southbound signage for I-110 begins)
I-210 - 1A-14
I-405 - 37B-38B, then 48-49A, then 53A-55, then 57A-72
Long Beach
I-405 - 24B-29, 30B-32C
I-605 - 2A-2B
I-710 - 1A-8
Irvine
I-5 - 92-100
I-405 - 1A-8
Santa Ana
I-5 - 104A-107A
Anaheim
I-5 - 109-113C
Riverside
I-215 - 27B-36
San Bernardino
I-10 - 73-74
I-15 - 123
I-215 - 41-54B
Stockton
I-5 - 468-481
Nice. I knew California would be even more of an undertaking than Texas being the only state with as many larger cities (and freeways.)
What actually fascinated me about this is how much this highlights how non-interstate freeways are important too (99, 101, 60, 57, 50, 55), i.e. how Fresno currently is not at all mentioned on this list.
Quote from: webny99 on November 23, 2024, 07:08:49 PMQuote from: NWI_Irish96 on November 23, 2024, 10:06:00 AMSticking to strict definition of city limits:
Quote from: Flint1979 on November 23, 2024, 11:22:17 AMIn just the cities.
Quote from: vdeane on November 23, 2024, 03:14:34 PMSticking to city limits for NY (as others seem to be doing):
To be fair, using "city limits" in Texas is the equivalent of using metro area in other parts of the country.
There are a few other states where cities annex a lot of land, and even within states, it varies, so it's always apples to oranges no matter how you slice it. But just for fun, here's the same cities for NY, but covering the entire core MPO planning areas (https://nysroads.com/mpo.php) (which seems like a good measure; that's where the MPOs decide how the federal transportation money gets spent, for instance) for each:
New York/Yonkers (NYMTC):
-I-78: 1-5
-I-84 (traditional): 17-21
-I-84 (current): 58-69
-I-87: 1-14, 1-15A
-I-95: 1A-22
-I-278: 3-54
-I-478: not numbered, but I-278 exit 26 has a ramp from I-478
-I-678: A-D, 1-19
-I-878: 1-2
-I-684: 1-10
-I-287: 15-8, 1-12
-I-295: 1-12
-I-495: 13-73
-I-695: not numbered
Buffalo (GBNRTC):
-I-90: 57A-49
-I-190: 1-25
-I-290: 1-7
-I-990: 1-5
Rochester (GTC*):
-I-90: 46-43
-I-390: 9-20
-I-490: 2-29
-I-590: 1-5
Syracuse (SMTC - traditional):
-I-81: 14-32
-I-90: 39-34A
-I-481: 1-9
-I-690: 1-17
Syracuse (SMTC - present):
-I-81: 67-78 or 66-78 (did they "fix" that yet?), 16A-29, 98-106
-I-90: 39-34A
-I-481: 1-9
-I-690: 1-17
Syracuse (SMTC - future):
-I-81: 67-106
-I-90: 39-34A
-I-690**: 1-13
Albany*** (CRTC):
-I-87: 21A-24, 1-16
-I-90: 26-24, 1-12, B1
-I-787: 1-9
-I-890: 1-9
*This is where "core planning area" is important; GTC has an outer planning area consisting of all of Region 4 plus Seneca and Yates Counties.
**Assuming the numbers and mileage on NY 690/I-690 reset at Thruway exit 39, as appears will be the case.
***Technically not 100,000, but just below, and it would feel weird to omit it given the size of the Capital District (the metro area is larger than that of Syracuse, for instance) and it's the state capital. Also, the effects of the Thruway are fun to see.
Wait...did vdeane just differentiate between when SMTC had Hastings, Schroeppel and West Monroe (current) and when it didn't (Onondaga County only)?
That's...well done.
Quote from: Rothman on November 24, 2024, 09:18:20 PMWait...did vdeane just differentiate between when SMTC had Hastings, Schroeppel and West Monroe (current) and when it didn't (Onondaga County only)?
That's...well done.
I was actually doing that based on the progress of the exit renumberings for the I-81 project.
Quote from: vdeane on November 24, 2024, 09:26:56 PMQuote from: Rothman on November 24, 2024, 09:18:20 PMWait...did vdeane just differentiate between when SMTC had Hastings, Schroeppel and West Monroe (current) and when it didn't (Onondaga County only)?
That's...well done.
I was actually doing that based on the progress of the exit renumberings for the I-81 project.
Less impressive, but I'll allow it. :D
In counties that are part of the Pittsburgh metropolitan area, it goes like this...
I-70: Exits 1-91, MM 0-99
I-76 (Pennsylvania Turnpike): Exits 10-91, MM 0-99
I-79: Exits 23-105, MM 22-105
I-80: No exits, MM 43-44
I-279: Exits 1-11, MM 0-13
I-376: Exits 5-85, MM 5-84
I-579: No exit numbers or mile markers
Here are all of the largeish metro areas in Colorado. I'm using rough estimates of built-up areas, since I feel that defines a city better. I'm being pretty lenient with metro continuity.
Denver (using the E-470/C470/NWP 7/8 beltway as the limits)
I-25: exits 194 to 228
I-70: exits 260 to 289
I-76: exits 1 to 18
I-225: exits 1 to 12
I-270: exits 0 to 5
Colorado Springs
I-25: exits 128 to 163
Fort Collins
I-25: exits 257 to 271
Pueblo
I-25: exits 94 to 104
Grand Junction
I-70: exits 26 to 37
Boulder
No interstates
Greeley
No interstates
North Dakota
Fargo:
I-29 - Exit 60 to 69 (looks like exit 59 could be built in the near future)
I-94 - Exit 347 to 351, with West Fargo starting at exit 343 and Moorhead ending at exit 2B in Minnesota
Bismarck:
I-94 - Exit 157 to 161, with Mandan starting at exit 152
Grand Forks:
I-29 - Exit 138 to 141 (exit 145 serves Grand Forks, too, but is pretty rural and outside the city limits)
Quote from: NWI_Irish96 on November 23, 2024, 10:06:00 AMSticking to strict definition of city limits:
Indianapolis
I-65: 103-124
I-69: 158-163, 200-201
I-70: 69-91
I-74: 73, 94
I-465: 2-14, 17-23, 27, 33-40, 44-49, 53
Fort Wayne
I-69: 302-316
I-469: 25-31
Evansville
I-69: 0-3, 7
South Bend
I-80/90: 72-77
Funny how my Dad who only lived in FW for 7 years before the mileage change still refers to 109 and 111 by old number despite it being in the 300s for most of my life
St Louis
I-44: 284A (EB)/284B (WB) to 293
I-55: 201B (SB)/202A (NB) to 207B, exits north of 207B use I-44 and I-64's exit numbers
I-64: 33C to 40B
I-70: 242 (EB)/243A (WB) to 249B
Cincinnati
I-71: 1A to 7 (SB)/8B (NB), excluding exit 6
I-74: 17 (WB)/18 (EB) to 18, I-75 interchange unnumbered
I-75: 1B to 9 (SB)/10A (NB)
Columbus
I-70: 91 to 110
I-71: 104 to 121
Birmingham (within the city limits):
I-20/59: 119-130
I-20 east of the split from I-59: 130-132
I-59 north of the split: 130-135
I-65: 258-264
I-459: 19-32
I-22 ends at I-65 just north of the city limits
For IL, we have:
Chicago
I-55: 283-294
I-57: 353-357
I-90: 79-94
I-94: 41-68
I-290: 23-30
Bloomington/Normal
I-55: 157-167
I-74: 127-135
Champaign/Urbana
I-57: 232-238
I-74: 179-185
Decatur
I-72: 133-144
Moline/Rock Island
I-74: 1-5(?)
I-80: 1-9(?)
I-280: 11-18(?)
Peoria
I-74: 88-95
Rockford
I-39: 119-122
I-90: 8-17
Springfield
I-55: 92-100
I-72: 93-103
St. Louis East Suburbs (BONUS)
I-55: 1-23
I-64: 1-16
I-70: 1-15
I-255: 6-30
I-270: 3-15
I'm disqualifying the ones that have only a single exit in the cities served, such as I-39 in Bloomington, I-72 in Champaign and I-88 in Moline. The reason for the question marks are because the junction between I-80 and I-74/I-280 is unnumbered, so there's no reasonable number to put at that spot.
Going with city limits, let's do Utah:
Salt Lake City
I-15: 305 to 312
I-80: 111 to 130
Provo
I-15: 263 to 265
Ogden
I-15: 341 to 342
St George
I-15: 2 to 10
Logan
lol no interstates
Same with West Valley City. I-215 only, I believe.
Quote from: PNWRoadgeek on November 23, 2024, 10:34:08 AMPortland:
I-5: 294-308
I-84: 1-10
I-205: 16-24
Salem:
I-5: 249-258
Eugene:
I-5: 191-195
Gresham:
I-84: 13
Hillsboro and Bend don't have interstates.
Yeah, we don't have a lot of interstates in Oregon.
Missed I-405 for Portland: 1A-4 (unnumbered terminal exit), and I-105 for Eugene: 1-4A
Adding: Medford: I-5, 27-30
Roseburg: I-5, 124-127, with 123 for the county fairgrounds
Springfield: I-5, 191-195
I-105, 4B
Pendleton: I-84, 207-210
Ontario: I-84, 374-376B
Quote from: Bickendan on February 17, 2025, 01:01:27 AMQuote from: PNWRoadgeek on November 23, 2024, 10:34:08 AMPortland:
I-5: 294-308
I-84: 1-10
I-205: 16-24
Salem:
I-5: 249-258
Eugene:
I-5: 191-195
Gresham:
I-84: 13
Hillsboro and Bend don't have interstates.
Yeah, we don't have a lot of interstates in Oregon.
Missed I-405 for Portland: 1A-4 (unnumbered terminal exit), and I-105 for Eugene: 1-4A
Adding: Medford: I-5, 27-30
Roseburg: I-5, 124-127, with 123 for the county fairgrounds
Springfield: I-5, 191-195
I-105, 4B
Pendleton: I-84, 207-210
Ontario: I-84, 374-376B
I didn't count short 3Dis, nor did I count any cities under 100k.
The way I interpret this question is what exits serve each major city of a state. I would also include exits that may be out of state that still serve the city. I am not separating the suburbs that would be considered major cities by their population like West Allis and Wauwatosa. With that in mind...
Wisconsin
Milwaukee:
I-41: #319-#317 (I-94 numbers), #10-#1 (I-894 numbers), #38-#48
I-43: #5-#10 (I-894 numbers), #316-#310 (I-94 numbers), #72-#76
I-94: #305-#319
I-794: #1-#3
I-894: #1-#10
Madison:
I-90 (& I-39): #132-#142
I-94: #132-#138(I-90 numbers)/#240
Green Bay:
I-41: #164-#170
I-43: #180-#192
Kenosha:
I-94 (& I-41): #340-#345
Racine:
I-94 (& I-41): #329-#335
Appleton:
I-41: #134-#145
Eau Claire:
I-94: #59-#70
Waukesha:
I-94: #291-#297
Oshkosh:
I-41: #113-#124
Janesville:
I-90 (& I-39): #171-#177
La Crosse:
I-90: #276 in MN-#5
Sheboygan:
I-43: #120-#128
Fond du Lac:
I-41: #95-#101
Wausau:
I-39: #185-#187
I-39 officially ends at Wis 29. But the US 51 freeway has Wausau exits to #194
Beloit:
I-90 (& I-39): #183-#1 in IL
I-43: #1-#2
Manitowoc:
I-43: #149-#154
Neenah/Menasha:
I-41: #129-#134
Stevens Point:
I-39: #151, #156-#161
In Louisiana
Shreveport
I-20: 8-19
I-49: 196-215
Monroe
I-20: 116B-120
Alexandria
I-49: 80-90
Lake Charles
I-10: 29-36
Lafayette
I-10: 100-104
I-49: 1A/1B-2 (for now)
Baton Rouge
I-10: 155A-166
I-12: 1A-7
New Orleans
I-10: 230-254