Highway that you have been on, but for the shortest distance

[thspfc]

I was on US-385 for about 100 feet in Julesburg, CO.

[Big John]

WI 69 in Verona, about 100'.

[Max Rockatansky]

Out what I can remember CA 225, which also happened to be a clinch of what's left:

https://www.gribblenation.org/2019/08/california-state-route-225-zombie.html?m=1

[1995hoo]

Travel Mapping shows that of European route E67, which runs from Tallinn, Estonia, to the outskirts of Prague, I have 0.43 miles of a total 1037.43 miles. The 0.43 miles represents the distance from the route's northern terminus at the cruise ship and ferry docks in Tallinn to the road that encircles the historic city center.

Much closer to home, I've been on VA-79 for a total of 0.17 miles, which also happens to be a clinch of that road.

[JayhawkCO]

State Highway: TX54 - 0.04 Miles
US Route: US197 - 0.29 Miles
2di: I-43 - 7.5 miles
3di: I-295 (MD/DC) - 0.8 Miles

[Rothman]

I only keep track of Interstates, so, at least by TM:

I-395 Washington Village, MD spur: .52 miles, clinched. (meh)

I-110 in TX: .8 of 1.13 miles.

I-29: 1.58 miles.

[US 89]

Probably someplace where I exited a freeway for gas or something and then got right back on. I've taken enough long road trips and random exits that the number of tiny segments of state routes I've obtained this way is not worth keeping track of, but I've been known to do this with US highways intersecting interstates simply to say I'd been on them. My very short mileage on US 43, 73, 81, 136, 159, 177, 266, and 611 all falls into that category.

Outside of stuff like that...I've clinched all 0.085 miles (450 feet) of unsigned Utah 231.

[ethanhopkin14]

Does the road have to be long and you have only been on a small section of it, or what if the road itself is short?

[JayhawkCO]

Does the road have to be long and you have only been on a small section of it, or what if the road itself is short?

Based on the OP, I would say the former.

[Bruce]

I've been on 0.7 miles of US 50 in DC, which is apparently 0.02% of its length according to TM.

[formulanone]

Doing searches on TM turned up

0.01 mi of Kentucky 2270, which has an tiny overlap with US 431.

0.02 mi of Texas SH 125, as an overlap of SH 214. Even the signage ignores the 100-foot concurrency:

[dlsterner]

Not counting instances where I just get off the interstate to get gas right at the end of the ramp.  I don't track those; plus too many to count.

Here is my Honor Roll (or is it Dishonor Roll?):

SC 414	0.06 miles (about 300 feet)	Overall
US 11E	0.11 miles	(US highways)
US 44	0.41 miles	(US Highways non-suffixed)
I-787	0.86 miles	(Interstate highways)
I-11	7.76 miles	(2d Interstate highways)

And for good measure:

VA 79

0.17 miles

(shortest highway I have clinched 100%)

[bassoon1986]

Going off of Travel Mapping stats:


LA 1247 - 0.03 miles
Bus US 278 (Hope, AR) - 0.16 miles
US 70S - 0.46 miles
I-79 - 1.81 miles
I-510 - 1.18 miles


iPhone

[Dirt Roads]

Much closer to home, I've been on VA-79 for a total of 0.17 miles, which also happens to be a clinch of that road.

Did this one on a trip to the Apple House in Linden, but I wasn't even aware that I was clinching it.  I've also got VA-6Y in Nelson County (0.2 miles) and WV-807 (St. Marys Hi Carpenter Bridge, 0.35 miles).

[DandyDan]

The historical leader on this front for me was IA 210, which I was on for the one block overlap with IA 17 in Madrid, but I have subsequently been on the section between US 69 and I-35 (or more accurately,  the Kum n Go on the east side of the interchange).

The short segment of WI 113 that is on N. First St. in Madison is probably the current leader. This was a byproduct of the day I saw the Foo Fighters at Kohl Center there, trying to get back to my hotel.

[jaehak]

For 2dis, guessing I-27 for me. Took it for 1 exit south of 40 and then drove back onto 40, literally just for the sake of getting on it.

[ethanhopkin14]

For 2dis, guessing I-27 for me. Took it for 1 exit south of 40 and then drove back onto 40, literally just for the sake of getting on it.

I did the same with I-19 (took the first exit south of I-10 and did it all metricly) so I guess that's my answer. 

[jaehak]

For 2dis, guessing I-27 for me. Took it for 1 exit south of 40 and then drove back onto 40, literally just for the sake of getting on it.

I did the same with I-19 (took o the first exit south of I-10 and did it all metricly) so I guess that's my answer.

19 would be close to shortest for me too. Took it from 10 to the airport exit once, so a whopping 3 exits.

[SkyPesos]

SR: MD 201, about 0.6 miles between DC 295 and the US 50/MD 295 interchange
US: US 136 for about 1 mile west of the IN 63 interchange. When we got lost one night coming back from Wisconsin, and ended up staying in a roadside motel somewhere in that range that night 
2di: I-69, about 4 miles between the I-94 interchange and the Canadian border
3di: I-670, about 1 mile between the eastern I-70 exit and the I-35 exit

[MinecraftNinja]

Don Valley Parkway for only a mile.

[JayhawkCO]

Thought I would add some info.

State Highway Least Traveled: TX54 - 0.04 Miles
Shortest State Highway Clinched: KS137 - 0.18 Miles

(Unbannered) US Route Least Traveled: US197 - 0.29 Miles
(Bannered) US Route Least Traveled: US80Trk (Arcadia, LA) 0.29 Miles
Shortest (Unbannered) US Route Clinched: US730 - 41.86 miles
Shortest (Bannered) US Route Clinched: US80Trk (Arcadia, LA) 0.29 Miles

2di Least Traveled: I-43 - 7.5 miles
Shortest 2di Clinched: I-97 - 17.45 miles

(Signed) 3di Least Traveled: I-295 (MD/DC) - 0.8 Miles
(Unsigned) 3di Least Traveled: I-878 (NY) - 0.66 Miles
Shortest (Signed) 3di Clinched: I-180 (WY) - 1.12 Miles
Shortest (Unsigned) 3di Clinched: I-878 (NY) - 0.66 Miles

All mileage from Travel Mapping.

[clong]

Tennessee State Hwy 247 - listed as .02 miles (105 feet) where it is co-signed with US31

[Dannny]

I-684 when it in runs into CT for 2 seconds (1.3 miles)
https://www.google.com/maps/@41.0987906,-73.7144725,14.54z

[zachary_amaryllis]

I was on US-385 for about 100 feet in Julesburg, CO.

julesburg, co is only about 100 feet long.

[zachary_amaryllis]

The oh... mile or so overlap of co-125 and co-14 in and near walden, co -- only part of co-125 I've ever been on