Highest signed route of each type in each state

[TravelingBethelite]

What are they?

For CT: CT 372; US 202; I-691

For PA: PA 999; US 522; I-576

[SD Mapman]

SD: SD 1806, US 385, I-229
ND: ND 1806, US 281, I-94
WY: WY 789, US 310, I-180

[Big John]

WI:

WI 794, I-894, US 151

[jakeroot]

Washington:

WA-971, US-730, I-705

British Columbia:

BC-395

[Roadgeek2500]

For PA, the highest numbered interstate is I-676.

[renegade]

Michigan:
I-696
US-223
M-553
Bonus:  County Highway H-63

[Mapmikey]

Virginia: I-664, US 522, VA 895, SR 10657
North Carolina: I-840, US 701, NC 905
South Carolina: I-585, US 701, SC 917

Mike

[thenetwork]

For Colorado -- Without looking at any reference material:

Interstate: I-270

US Highway:  Used to be US-666, but I believe it's "replacement", US-491, still keeps it at the highest (??)

"Private" (Tolled) Highway:  E-470 -- even has it's own styled shield.

State Highway:  Used to be CO-789 (although still listed on some mappery), I want to guess C(O)-470 (??)

[hotdogPi]

Massachusetts: I-495, MA 295, US 202

[thenetwork]

OHIO (again, from memory):

Interstate:  I-490

US:  US-422

State:  OH-821 (??)

[oscar]

Alaska: AK 98. There are higher-numbered Forest Service roads, but I don't know their signage status.

Hawaii: Interstate H-201, HI 8930. For the county routes probably CR 581 on Kauai, with perhaps one remnant CR 803 sign on one of Oahu's no-longer-officially-numbered county routes.

Going into Canada's Arctic territories:

Yukon: YT 37

Northwest Territories: NT 8

Nunavut: no highways there

Also, Quebec's Autoroutes top out at A-973. I don't know about its other provincial routes, which go at least into the high 300s.

[jp the roadgeek]

RI: RI 403, US 44, I-295
VT: VT 346, US 302, I-189
NH: NH 286, US 302, I-393
ME: ME 238, US 302, I-395 (was I-495)
NY: NY 890, US 220https://www.aaroads.com/forum/Smileys/default/happy0035.gif, I-895
NJ: NJ 495, US 322, I-676
DE: DE 896, US 202, I-495 (was I-895)
MD: MD 936, US 522https://www.aaroads.com/forum/Smileys/default/happy0035.gif, I-895

[freebrickproductions]

Alabama:
Interstate: I-759
US Highway: US 431
State Route: AL 759 (though AL 959 is the proposed number for a route along the Birmingham Northern Beltline)

[hotdogPi]

NY: NY 890, US 220 I-895 I-990

[jemacedo9]

I-576 in PA isn't officially an interstate, right? Technically, isn't it PA Turnpike 576?

[Eth]

Georgia:
GA 520 (I think; are any completed portions of 540 signed? Haven't been down that way to check)
US 441
I-985

[briantroutman]

I-576 in PA isn't officially an interstate, right? Technically, isn't it PA Turnpike 576?

AAA jumped the gun and marked it as I-576 on a Pittsburgh city map some years ago, but it is most definitely not an Interstate yet. It's PA Turnpike 576.

[Sam]

NY: NY 890, US 220, I-895

I-990 -- or are we ranking by parent?

I'll concede NY 990v is a mistake and shouldn't be signed.

[xcellntbuy]

Georgia:
GA 520 (I think; are any completed portions of 540 signed? Haven't been down that way to check)
US 441
I-985

GA 540 is not signed yet.

[Revive 755]

Illinois
I-474 (until the O'Hare Bypass is designated as I-490; had proposed I-870)
US 150 (was US 460 at one time)
IL 394 for signed, formerly IL 594.  Unsigned would probably be the four digit route designation for Carmen Road south of US 34 near the Iowa border, 8xxx I think.

Iowa
I-680
US 275
IA 415 for completely signed, IA 965 for mostly hidden (see http://www.iowahighwayends.net/ends/ia965.html), formerly IA 988

Missouri
I-670
US 412 (was US 460 at one time)
MO 765 for signed; MO 799 (the MLK Bridge in St. Louis) for unsigned

Nebraska
I-680
US 385
NE 370

[SignGeek101]

Manitoba's highest is 632 (though I couldn't find it and it may not even be signed). Highest one I found signed was 594.

[Zeffy]

Florida:

I-595, US 441, and maybe FL 9336.

[jbnati27]

OHIO (again, from memory):

Interstate:  I-490

US:  US-422

State:  OH-821 (??)

No reference material here, either. It's more fun that way. I-680 around Youngstown for the interstate and OH-835 in Dayton.

[formulanone]

Florida:

I-595, US 441, and maybe FL 9336.

I-795 will soon be the highest interstate in Florida. I don't think there's anything higher than 9336, for its state or county roads (there's a few 4000-41xx county roads posted).

[DTComposer]

California:
CA-905 (one that's signed as Interstate: CA-371)
US-395 (former highest: US-466)
I-980