Only in this state....

[agentsteel53]

couldn't they just fudge it and call it exit 400 or 402?  or 400A?

[AsphaltPlanet]

Exit 401 replaced Exit 400 to the east, but it probably could have been numbered 402.  The original traffic engineers who numbered the exit must have figured the general population was more intelligent than it apparently is.

[Brandon]

couldn't they just fudge it and call it exit 400 or 402?  or 400A?

Shoot, you know kilometers are small enough they could get away with it.

[NWI_Irish96]

Arkansas: Multiple occurrences of a route number (AR 60, AR 74 come to mind right away)

Indiana has this also.

[NWI_Irish96]

Only in Arizona - An interstate's distances are measured exclusively in kilometers.

[agentsteel53]

Arkansas: Multiple occurrences of a route number (AR 60, AR 74 come to mind right away)

Indiana has this also.

as does California.  see 84, if you can.

[TheStranger]

Arkansas: Multiple occurrences of a route number (AR 60, AR 74 come to mind right away)

Indiana has this also.

as does California.  see 84, if you can.

I still have never understood why this was considered as one singular corridor (number-wise) when the two segments have never even directly connected and would have always required a concurrency on 580.

(The other examples of split routes - 162, 168, 190, 39, 90 - involve straightline physical gaps of some sort.)

[Brandon]

Arkansas: Multiple occurrences of a route number (AR 60, AR 74 come to mind right away)

Indiana has this also.

In trump, if you will.  Indiana may have more instances of the same route number than any other state in the Union due to Indiana's route numbering grid.  There are multiple IN-4s, IN-119s, IN-3s, etc.

You could fill a thread with them.

[theline]

Indiana has balanced the state budget by turning back state highways to localities to maintain, causing many discontinuities in highways. It's not only a burden to the local governments, but also sometimes confusing to travelers. At least the budget is balanced.

[Big John]

Wisconsin:  No single-digit state highway.

[Brandon]

Indiana has balanced the state budget by turning back state highways to localities to maintain, causing many discontinuities in highways. It's not only a burden to the local governments, but also sometimes confusing to travelers. At least the budget is balanced.

It was that way before they did the turnbacks.  IN-4 has been in at least three sections for decades as an example.

[kphoger]

Wisconsin:  No single-digit state highway.

Nope.  See Nevada.

[agentsteel53]

Wisconsin:  No single-digit state highway.

Nope.  See Nevada.

Hawaii as well. 

Nevada, in fact, has only two two-digit routes officially on the current books: 28, and 88, both continuations of California routes with the same number, in the tourist-heavy Tahoe region.  there may be a 34 and an 8A which are remnants of the pre-1976 renumbering, but it's tough to tell.  signs exist for them, but they just may be remnants since they're completely out in the sticks.

Nevada is definitely the only state which uses three-digit numbers only as part of its own internally consistent grid.  any violations are, again, due to desired continuity with that neighboring $tate that'$ filled with $ucker touri$t$.

[kkt]

Wisconsin:  No single-digit state highway.

California has at least two:  CA-3 in the far north of the state, and CA-9 from Los Gatos to Santa Cruz.

[CentralCAroadgeek]

Wisconsin:  No single-digit state highway.

California has at least two:  CA-3 in the far north of the state, and CA-9 from Los Gatos to Santa Cruz.

California also has 1, 2, 4, and 7.

[kphoger]

Wisconsin:  No single-digit state highway.

California has at least two:  CA-3 in the far north of the state, and CA-9 from Los Gatos to Santa Cruz.

California also has 1, 2, 4, and 7.

Kansas has eight.  Wheeeeeee!!!!

[myosh_tino]

Wisconsin:  No single-digit state highway.

California has at least two:  CA-3 in the far north of the state, and CA-9 from Los Gatos to Santa Cruz.

California also has 1, 2, 4, and 7.

Kansas has eight.  Wheeeeeee!!!!

The six state routes mentioned by kkt and CentralCAroadgeek is the maximum number of single-digit California state routes because the other three (5, 6 and 8) are all either Interstates (5 and 8) or US routes (6).  California does not allow route duplication.

[Takumi]

Virginia also has 8, with 1 (in use for US 1) the only omission. From 1923 to 1933, it had no single digit state routes at all.

North Carolina currently does not have a 6 (or 1, for the same reason as Virginia), with the most recent NC 6 decommissioned in the mid-2000s. Maryland has also never had an MD 1, or MD 9 for some reason.

[Kacie Jane]

To nip the discussion in the bud...

States that have all 9: AK, DE, IL, IN, KY, LA, MS, OK
States that have all 9 if you count I & US routes: CA, CT, ID, IA, ME, MA, MN, NY, SC, TN, VA
States that have all 9 if you count hidden routes: AL, GA (or should this be in the first list?), OR

States with no single-digit state highways: AZ, HI, NV, WI, WY

Texas is an interesting case.  It has Farm to Market 1-9; it also has 1-9 if you combine all the other types of state highways together.  But for just their base highways, they're missing a handful of single digits.

Florida is only missing SR 1.  It has US 1, but since they normally don't give a rat's ass about duplication, I left them off the second list.  But SR A1A used to be SR 1, and still has a 1 in it, so...

(I almost left New York off the second list for the same reason, but since they usually care about duplication -- but only with US routes -- I still included them.)

[Big John]

To nip the discussion in the bud...

States that have all 9: AK, DE, IL, IN, KY, LA, MS, OK
States that have all 9 if you count I & US routes: CA, CT, ID, IA, ME, MA, MN, NY, SC, TN, VA
States that have all 9 if you count hidden routes: AL, GA (or should this be in the first list?), OR

States with no single-digit state highways: AZ, HI, NV, WI, WY

Texas is an interesting case.  It has Farm to Market 1-9; it also has 1-9 if you combine all the other types of state highways together.  But for just their base highways, they're missing a handful of single digits.

Florida is only missing SR 1.  It has US 1, but since they normally don't give a rat's ass about duplication, I left them off the second list.  But SR A1A used to be SR 1, and still has a 1 in it, so...

(I almost left New York off the second list for the same reason, but since they usually care about duplication -- but only with US routes -- I still included them.)

I stand corrected.

But for Georgia, the only hidden routes are the state routes concurrent with the interstate highways (SR 401-425).  All state routes concurrent with US routes are openly signed, including SR 1-9.

[Scott5114]

Oklahoma has 14 one-digit routes.

Wait, what?

[huskeroadgeek]

Only in South Carolina, AFAIK:  Secondary road markers that give the county number as well as the route number (e.g., S-30-301, which is in Laurens County (#30)).

Nebraska does this with their link/spur routes but I don't know if they're considered primary or secondary.

Based on where they go and their short length, link/spur routes are clearly secondary routes, but NDOR does not define them as secondary routes as opposed to numbered routes being primary routes.

[theline]

Oklahoma has 14 one-digit routes.

Wait, what?

Hexadecimal, of course.

[Alps]

Wisconsin:  No single-digit state highway.

Nope.  See Nevada.

Quebec: No single OR two digit provincial highways.

[huskeroadgeek]

Arkansas has a unique warning sign I have not seen anywhere else. On certain stretches of highway in the mountains there will be a sign saying "(X Hwy.) very crooked and steep next X miles". I'm not sure if they still do this, but on a particularly hilly and curvy stretch of US 71 between Alma and Fayetteville they used to add a sign to the "crooked and steep" sign that indicated the number of people who had died in accidents on the road in the last few years and then said "Don't you be next". This was before I-540 was built when US 71 was still the main road through the area, so I'm not sure whether they still update the sign with the highway deaths now.

I believe Tennessee is the only state that has a primary/secondary route system in which the same numbered route can switch between primary and secondary status based on location.