State highways that cross interstates but have no interchange.

[dvferyance]

For the most part every time a state highway crosses an interstate it has an interchange but there are a few exceptions. I know WI-71 crosses I-90 at Sparta but with no interchange same for WI-58 at Mauston. IL-23 crosses I-90 with no interchange although one is planned. IN-16 crosses I-65 with no interchange. Any other examples? I just want to focus on primary state highways so Missouri's lettered highways don't count.

[hotdogPi]

I-95 with MA 27, MA 117, NH 27, NH 84, NH 88, NH 111, and NH 151

I-190 with MA 62

I-495 with MA 30, MA 108, MA 121, MA 135, and MA 225

Mass Pike (I-90) with too many to count

[dvferyance]

I-495 with MA 108, MA 121, and MA 225

Mass Pike (I-90) with too many to count

I think the Ohio Turnpike has some too not sure what they are though.

[7/8]

I-495 with MA 108, MA 121, and MA 225

Mass Pike (I-90) with too many to count

I think the Ohio Turnpike has some too not sure what they are though.

Looking at my road atlas, I see:
OH 295
590
19
412
101
269
60
43
700
88
45
and 170

Also, there is notably no interchange between the turnpike and I-475 in Toledo

[sandwalk]

I-495 with MA 108, MA 121, and MA 225

Mass Pike (I-90) with too many to count

I think the Ohio Turnpike has some too not sure what they are though.

Because I had nothing better to do than count.....

There are 38 State Routes that cross the Ohio Turnpike (I-76/80/90) without an interchange, including State Route 11 which is a freeway. Also, State Route 10 has a partial interchange with the Turnpike.

Interestingly, all of the State Routes that cross the Turnpike west of metro Toledo have an interchange.

[Quillz]

CA-83 does not intersect with (future) I-210 due to NIMBYs.

[jp the roadgeek]

In CT (not including partial interchanges or crossings with exits nearby that say "TO CT XX"):

I-84: CT 188 in Middlebury (although there is an exit farther west when it recrosses)

I-91: CT 160 in Rocky Hill

I-95: CT 121 in Milford

I-395: CT 193 in Thompson (there are a couple of CT 12 crossings without marked exits, but there is an exit where it's easily accessible within a quarter mile)

I-691: CT 322 (as part of the western end connections to I-84)

Mass Pike: MA 102 (couple of times), MA 183, MA 8, MA 23, MA 116, MA 141, MA 181, MA 67, MA 19, MA 148, MA 49, MA 31, MA 56, MA 140, MA 135, MA 85, MA 30 (3 mi west of exit for it in Natick, also in Newton), MA 126, MA 27, MA 2/30 in Boston, MA 2 again (Beacon St) in Boston, MA 28,

[hobsini2]

There's plenty of examples in Illinois aside from IL 23 at I-90.
Int 90
  US 20 Belvidere
  IL 72 (few points) Gilberts, Hoffman Est, Park Ridge
  US 12-45 Rosemont
  IL 50 Chicago

Int 88
  US 52 Dixon
  IL 23 DeKalb
  IL 25 North Aurora
  IL 38 Oak Brook

Int 80
  US 6 (few points) E of Atkinson, Joliet
  US 34 Princeton
  IL 50 Country Club Hills

Int 39
  IL 351 Jonesville

Int 57
  IL 148 Mt Vernon
  US 40 Effingham
  IL 10 Champaign
  US 150 Champaign
  IL 50 Oak Forest

Int 70
  IL 160 Highland
  US 40 (few points) E of Pocahontas, Effingham
  IL 185 Vandalia
  IL 121 Greenup

Int 72
  IL 104 Jacksonville
  IL 48 E of Argenta

Int 74
  US 6 Colona
  IL 78 N of Elmwood
  US 150 (Few points) Morton, Deer Creek, Farmer City

Int 64
  IL 148 Mt Vernon
  IL 142 Mt Vernon

Int 24
  IL 37 Pulley's Mill

Int 294
  IL 68 Wheeling
  IL 21 Wheeling
  IL 72 Rosemont
  US 12-45 Schiller Park
  IL 43 Oak Lawn
  IL 7 Worth
 
Int 290
  IL 19 Itasca

Int 474
  IL 8 Pottstown
  IL 116 Bellvue

Int 172
  IL 79 S of Quincy

Int 280
   US 6 Colona

[1995hoo]

Do you mean "crosses and never has an interchange somewhere else," or "may have an interchange somewhere, but crosses at some point with no interchange?"

VA-55 and I-66 are an example of the latter. I-66 crosses over 55 just west of Broad Run with no interchange, though further to the west some five or so miles the two have a short concurrency. Location of the non-interchange is here: https://goo.gl/maps/WsN7GFxLf412

(BTW, I assume that an interchange on a different road but literally right around the corner counts as close enough. VA-55 passes under I-66 again a few miles further west, but there is a partial interchange just a smidgen south of a stop sign a short distance to the east: https://goo.gl/maps/xsfmKCXYeRU2 )

VA-208 has no interchange with I-95; you have to use US-1 to connect: https://goo.gl/maps/mVZydWQmdAP2

VA-22 has none with I-64 near Shadwell: https://goo.gl/maps/ZHpDM6T3DvF2

I could probably think of some more but I need to go cook dinner.

[TheStranger]

California examples (beyond 210/83 mentioned earlier) -

I-880/Route 87 in San Jose (interchange was proposed here at one point but canceled due to limited right of way; one quadrant is a VTA light rail yard)

I-5/Route 261 in Irvine (though I-5 has a connection with the freeway that toll route Route 261 feeds into, Jamboree Road)

[dvferyance]

Since we discussed Ohio I decided to look at Indiana. US-35 crosses the turnpike near La Porte with no interchange so does IN-120 cross near Fremont with no interchange. IN-3 and IN-327 are maybes. Not sure if the end at the Michigan state line or at IN-120.

[silverback1065]

In Indiana SR 16 crosses 65 with no interchange. so does SR 341 with i-74, and SR 103 with i-70

[hobsini2]

Do you mean "crosses and never has an interchange somewhere else," or "may have an interchange somewhere, but crosses at some point with no interchange?"

VA-55 and I-66 are an example of the latter. I-66 crosses over 55 just west of Broad Run with no interchange, though further to the west some five or so miles the two have a short concurrency. Location of the non-interchange is here: https://goo.gl/maps/WsN7GFxLf412

(BTW, I assume that an interchange on a different road but literally right around the corner counts as close enough. VA-55 passes under I-66 again a few miles further west, but there is a partial interchange just a smidgen south of a stop sign a short distance to the east: https://goo.gl/maps/xsfmKCXYeRU2 )

VA-208 has no interchange with I-95; you have to use US-1 to connect: https://goo.gl/maps/mVZydWQmdAP2

VA-22 has none with I-64 near Shadwell: https://goo.gl/maps/ZHpDM6T3DvF2

I could probably think of some more but I need to go cook dinner.

I took it as crosses at a point with no interchange at that exact point. I could be wrong.

[Mapmikey]

South Carolina list:

I-20 and SC 403 (US 401 nearby)
I-20 and SC 154 (US 15 nearby)
I-20 and SC 191 (SC 19 nearby)
I-26 and SC 602 (SC 302 nearby)
I-77 and SC 901 northeast of Winnsboro (SC 200 nearby)
I-85 and SC 56 (US 176 nearby)
I-85 and SC 150 (SC 11 nearby)
I-95 and SC 46 (US 17 nearby)
I-95 and SC 210 (US 15 nearby)
I-385 and SC 92 (SC 101 nearby)
I-520 and SC 125 (US 1-78 nearby)
I-526 and SC 61 (SC 461 nearby)

[djsekani]

There are two of these in Downtown Detroit. I-375 has no interchange with M-3, and I-75 has no interchange with M-1.

[Mapmikey]

North Carolina list:

I-40 and NC 127 (US 321 nearby)
I-40 and NC 16 Bus (interchange removed, NC 16 nearby)
I-74 and NC 62
I-77 and NC 268 Bus
I-77 and NC 160
I-85 and NC 3 (US 29 nearby)
I-95 and NC 4-48 (old I-95 Bus nearby)
I-95 and NC 58 (an SR exit is nearby)
I-95 and NC 581
I-95 and NC 222 (US 301 nearby)
I-140 and NC 132
I-240 and NC 694 (US 70 nearby)

[renegade]

There's no interchange at I-75 and M-72 in Grayllng, Michigan.

[TR69]

Kentucky probably shouldn't count either since it has so many numbered state highways. But, if we restrict our search to just 2di's...

I-64 has no direct interchange with:
US 25, Lexington
KY 57, Lexington
US 60, Winchester, Grayson

I-65:
US 31E, Louisville
US 60, Louisville
KY 61, Shepherdsville
US 31W, Upton, Park City
KY 88, Munfordville
KY 73, Franklin

I-71:
US 42, Hills and Dales
KY 55, Campbellsburg
KY 36, Easterday
KY 47, Sparta

I-75:
US 25, Sadieville, Lexington (three times! though they do eventually get together just shy of the city limits), East Bernstadt (twice)
KY 57, Lexington
KY 52, Richmond

I-24:
KY 95, Calvert City
KY 93, Kuttawa, Eddyville

I-275:
KY 20, Hebron
US 27, Highland Heights
KY 8, Fort Thomas

Of course, these are all pretty understandable.

I'll let others attack I-69 and the Parkways if desired.

[froggie]

Fairly common in several eastern states, including but not limited to those that others have mentioned.

[cpzilliacus]

Maryland:

I-95:

Md. 193 in Greenbelt (Md. 201 and the Baltimore-Washington Parkway nearby)
Md. 103 in Elkridge (Md. 100 not far north)
U.S. 1 in Arbutus (access via I-195)
U.S. 1 Alternate in Baltimore City (exit possible northbound and entrance southbound)
Md. 151 in Baltimore City (access via Md. 150)
Md. 136 in Abingdon (access via Md. 7 and Md. 543)
Md. 462 in Aberdeen (access via Md. 22 or Md. 155)
Md. 834 in Perryville (access via Md. 222)
Md. 545 in Elkton (access via Md. 279)
Md. 213 in Elkton (access also via Md. 279)

I-495:

Md. 212 in Adelphi (access via I-95)
Md. 191 in Bethesda (access via Md. 190)

I-70:

U.S. 11 in Hagerstown (access via I-81)
U.S. 40 Alternate in Hagerstown (access via Md. 65)
U.S. 40 at the Frederick County/Washington County border (access via Md. 17 or Md. 66)
U.S. 40 in Frederick (half interchange (eastbound exit, westbound entrance) - access via U.S. 40 Alternate or U.S. 15)
U.S. 40 Alternate in Frederick (westbound exit, eastbound entrance)
Md. 180 (may  be decommissioned) in Frederick County - access via

[TheHighwayMan3561]

Minnesota (two of these don't really count)

I-494/35E/MN 55 in Eagan. I think there were originally plans for an interchange but was abandoned; access is made via 494 and MN 149. I-494 has an interchange with 55 in Plymouth which is why this one barely counts.

I-35/MN 23 near Sandstone. Doesn't really count because it's just a crossover inbetween 23 having two interchanges with 35 at Exits 191 and 195.

I-494/MN 13 in Eagan. This is the true uncompromised example.

Wisconsin I know of WIS 58 crossing over I-90/94 near Mauston with no interchange and no trailblazers at the WIS 82 exit to get to 58. Probably others.

[WNYroadgeek]

New York:

I-90:

NY 76 in Ripley
NY 438 in Irving
NY 249 in Irving
NY 354 in Cheektowaga
NY 240 in Cheektowaga
NY 130 in Cheektowaga
NY 63 in Batavia
NY 237 in Bergen
NY 36 in Churchville
NY 386 in Scottsville
NY 383 in Scottsville
NY 253 in Henrietta
NY 15 in Henrietta (though it used to have an interchange with I-90 here before I-390 was built)
NY 15A in Henrietta
NY 65 in Pittsford
NY 64 in Pittsford
NY 96 in Victor
NY 88 in Phelps
NY 89 in Seneca Falls
NY 90 in Port Byron
NY 31 in Port Byron, Jordan, and Verona
NY 38 in Port Byron
NY 173 in Warners
NY 370 in Liverpool
NY 46 in Oneida
NY 26 in Rome
NY 69 in Whitesboro
NY 49 in Marcy
NY 80 in Fort Plain
NY 160 in Pattersonville
NY 159 in Schenectady
NY 7 in Schenectady
NY 158 in Schenectady
NY 146 in Schenectady
NY 155 in Albany
NY 32 in Albany
NY 151 in E. Greenbush
NY 203 in Nassau
NY 66 in Malden Bridge
NY 295 in E. Chatham

I-290:

NY 265 in Tonawanda

I-390:

NY 33 in Gates
NY 436 in Dansville

I-490:

NY 153 in Pittsford
NY 383 in Rochester

[hbelkins]

Kentucky probably shouldn't count either since it has so many numbered state highways. But, if we restrict our search to just 2di's...

Nitpick -- "2di" refers to two-digit Interstate. A more appropriate term would be "2dKY" or "two-digit state route."

I-75:
KY 52, Richmond

That's going to change. When the reconstruction of KY 52 between Lancaster and Richmond is completed, the new portion from west of Paint Lick extending eastward is going to tie into Duncannon Lane (KY four-digit mumble) and then that four-digit route will be renumbered KY 52, giving KY 52 an interchange with I-75.

[dvferyance]

I-495 with MA 108, MA 121, and MA 225

Mass Pike (I-90) with too many to count

I think the Ohio Turnpike has some too not sure what they are though.

Because I had nothing better to do than count.....

There are 38 State Routes that cross the Ohio Turnpike (I-76/80/90) without an interchange, including State Route 11 which is a freeway. Also, State Route 10 has a partial interchange with the Turnpike.

Interestingly, all of the State Routes that cross the Turnpike west of metro Toledo have an interchange.

Actually that's not true US-127 crosses at MM 19 with no interchange.

[GaryV]

There's no interchange at I-75 and M-72 in Grayllng, Michigan.

Nor is there an intersection with M-30 several miles south(west) near West Branch.

Although both of them are signed with "TO" at the nearest interchanges.