3di

[Mapmikey]

Not sure that sign is still there. Virginia replaced the cutouts at Commonwealth and Lee Highway sometime prior to 2003, and then the references to VA 381 were removed at a later date.

Oh the VA 381 signs are definitely still gone.  But the pic shows where the transition point was (always was, and still is) which was what the question in the thread was considering.

[vdeane]

http://www.kurumi.com/roads/3di/long3di.html


    0.70 miles - I-878, New York. Not signed as an interstate.
    0.83 miles - I-315, Montana. Not signed as an interstate.
    1.06 miles - I-375, Michigan. The nation's (current) shortest signed interstate.
    1.09 miles - I-180, Wyoming. The only interstate that is not a freeway.
    1.12 miles - I-895, New York.
    1.20 miles - I-194, North Dakota.
    1.21 miles - I-587, New York.
    1.29 miles - I-395, Florida.
    1.34 miles - I-375, Florida.
    1.39 miles - I-115, Montana.
    1.40 miles - I-345, Texas.
    1.44 miles - I-175, Florida.
    1.49 miles - I-189, Vermont.
    1.50 miles - I-705, Washington State.
    1.57 miles - I-579, Pennsylvania. Was 1.30 miles in 1998.
    1.67 miles - I-381, Virginia. Was 1.17 miles in 1998; the official endpoint(s) changed.
    1.98 miles - I-395, Maryland. In 1998, this was the shortest signed interstate at 0.72 miles. But more recent federal highway logs consider I-395 to be nearly 2 miles long.

What about I-190 (SD)? 1.72 lovely miles.

i think Kurumi's link suffices

Yes. Yes it does.

I need to proof it, though... Texas I-110 (0.92 mi) should be there, for example.

How About I-478 (Unsigned) NY Brooklyn Battery Tunnel

Believe it or not, it's over 2 miles long; 2.1 or 2.4 depending on where you measure it from.

[NE2]

I-164 is now 0.69 miles long.

[robbones]

I-164 is now 0.69 miles long.

If its the segment going from US 41 to the curve, they should rename it I -   odd x69

[bing101]

https://en.wikipedia.org/wiki/Interstate_H-201


Hawaii has a 4 mile 3di interstate in Oahu.

[Scott5114]

https://en.wikipedia.org/wiki/Interstate_H-201


Hawaii has a 4 mile 4di interstate.

Since when is H a digit?

[ET21]

I-190 SD (1.72 Mi) and IL (3.07 Mi)

[theline]

https://en.wikipedia.org/wiki/Interstate_H-201


Hawaii has a 4 mile 4di interstate.

Since when is H a digit?

In the octodecimal numbering system, and any system with more digits than octodecimal. 

[CNGL-Leudimin]

Well, in that case we could renumber both I-35Es to I-862, I-69C to I-1692 and I-69E to I-1694. Both I-35Ws and I-69W would then become I-35 and I-69, respectively.

[SSOWorld]

Well, in that case we could renumber both I-35Es to I-862, I-69C to I-1692 and I-69E to I-1694. Both I-35Ws and I-69W would then become I-35 and I-69, respectively.

wait what?

[bugo]

Well, in that case we could renumber both I-35Es to I-862, I-69C to I-1692 and I-69E to I-1694. Both I-35Ws and I-69W would then become I-35 and I-69, respectively.

wait what?

YHBT