What are the exit numbers on the interstate in the major cities in your state?

[achilles765]

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

[epzik8]

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

[NWI_Irish96]

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

[TheHighwayMan3561]

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

[PNWRoadgeek]

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.

[Flint1979]

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

[webny99]

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.

[TheStranger]

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

[vdeane]

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.

[jp the roadgeek]

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

[webny99]

Sticking to strict definition of city limits:

In just the cities.

Sticking 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.

[GaryV]

In 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.)

[Flint1979]

In 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.

[MATraveler128]

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

[achilles765]

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.

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. 

[achilles765]

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)

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.)

[TheStranger]

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)

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.

[vdeane]

Sticking to strict definition of city limits:

In just the cities.

Sticking 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 (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.

[Rothman]

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.

[vdeane]

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.

I was actually doing that based on the progress of the exit renumberings for the I-81 project.

[Rothman]

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.

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.

[Gnutella]

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

[jlam]

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

[flan]

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)

[I-55]

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: 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