The longest state highway in Wisconsin, WIS 35 becomes ILL 35, the shortest state highway in Illinois.
The longest state highway in Minnesota, MN 1 becomes ND 54, a 2 1/2 mile route between the Red River and I-29.
Montana 200 is a 900-mile-long highway, the longest state highway in the US. It connects to ID-200, which is a comparatively paltry 33 miles. Maybe not so short in absolute terms, but in terms of percentage it would be hard to beat.
OH 32 which crosses the entirety of Ohio becomes WV 618 which runs only a few miles through Parkersburg WV
PA 18 which begins at Lake Erie becomes WV 69 which runs only a few miles to US 250
NV 88 (7.86 miles) versus CA 88 (122 miles).
VT 26...
Not as dramatic as some other examples, but there is OH 2 (227 miles) turning into the northern segment of IN 37 (14 miles) past its western terminus.
153 mi IN 28 becomes 8 mi IL 119
121 mil IN 39 becomes 1 mi MI 239
IA 27, aka the Avenue of the Saints, runs N/S through Iowa but only runs a few miles as MO 27 before ending at US 61.
There used to be KY 80 becoming MO 80, which is 6 miles, but the connection has since been discontinued. It does become VA 80, which is 67 miles compared to the 483 miles in Kentucky.
US 395 (1,305 miles) becomes BC Highway 395 at the Canadian border, which ends a mere 2.5 miles later.
Another short one on the Canadian border: BC Highway 41 (0.8 mi) ties into WA 21 (191 mi).
Quote from: Bruce on February 28, 2022, 04:38:35 PM
US 395 (1,305 miles) becomes BC Highway 395 at the Canadian border, which ends a mere 2.5 miles later.
Another short one on the Canadian border: BC Highway 41 (0.8 mi) ties into WA 21 (191 mi).
I-95, NB 95...
CA 62 (151 miles) becomes "TRUCK AZ 95", a 0.85 mile connector to AZ 95 in Parker.
Interstate 29 (750 miles) used to become MB 29 (0.3 miles) at the Emerson/Pembina border crossing.
QC 132, at a thousand miles, connects with NY 970T at its west end. It's a reference route in NY, though, so I don't know if it counts.
US 395 in NV (88.62 miles), which lies between two sections in CA totaling 556.91 miles.
Indiana 39 (179 miles north section) becoming M-239 (1.1 miles) to end at I-94 just after crossing the state line.
RI 15 becomes (unsigned) MA 15, which is 0.23 miles
MA/NH 119 becoming the 0.08 mi. VT 119
The 122.45 NY 55 becomes the 2.64 mile CT 55
PA 491 becoming the 0.66 mile DE 491
RI 78 becoming the 0.43 mile CT 78 (even less than that if you subtract the loop ramp)
And a double: MA 114A becoming the 0.1 mile segment of RI 114A on its southern end, and the 0.3 mile segment on its northern end.
The eastern US 2 enters New York for 0.9 miles.
PA 413 enters New Jersey for 0.7 miles.
NH 108 enters Massachusetts for 0.9 miles.
MN 23 - 343 miles in MN and 1/2 mile in WI. :)
IN 62 stretchs across Southern Indiana, from meeting US 50 near Dillsboro/not too far from I-275 and the Ohio River and Cincinnati, and comes all the way west and south, thru New Albany, then Evansville and Mount Vernon, to cross the Wabash River into Illinois, and becomes IL 141 - clocking in at 204 miles (per wikipedia)
IL 141 is all of 18 miles from the Wabash to US 45
IN-15 (95 miles) enters Michigan and becomes M-103 (3 miles).
Can't forget US-131.
IN: 0.64 miles
MI: 269.32 miles
NC/VA 87: 239 miles in NC, 4 in VA.
Quote from: Scott5114 on February 28, 2022, 02:44:08 PM
Montana 200 is a 900-mile-long highway, the longest state highway in the US. It connects to ID-200, which is a comparatively paltry 33 miles. Maybe not so short in absolute terms, but in terms of percentage it would be hard to beat.
This gets even more dramatic if you consider that Montana 200 is connected to North Dakota 200, which spans the entire state, and Minnesota 200, which almost spans its entire state.
Effectively, Idaho gets a 2.43% slice of a four-state, 1,356 mile Highway 200 to its name. I'd say that's even harder to beat.
Quote from: jp the roadgeek on February 28, 2022, 09:02:40 PM
MA/NH 119 becoming the 0.08 mi. VT 119
Which will change in a few years when the new bridge downstream is finished. Not sure offhand how much, though.
Quote from: Hobart on February 28, 2022, 11:40:44 PM
Quote from: Scott5114 on February 28, 2022, 02:44:08 PM
Montana 200 is a 900-mile-long highway, the longest state highway in the US. It connects to ID-200, which is a comparatively paltry 33 miles. Maybe not so short in absolute terms, but in terms of percentage it would be hard to beat.
This gets even more dramatic if you consider that Montana 200 is connected to North Dakota 200, which spans the entire state, and Minnesota 200, which almost spans its entire state.
Effectively, Idaho gets a 2.43% slice of a four-state, 1,356 mile Highway 200 to its name. I'd say that's even harder to beat.
Vermont has 2 examples already mentioned that beat it...
VT/NH/ME 26: 126.77 miles. 53 feet in Vermont. 0.008%
VT/NH/MA 119: 75.67 miles. 0.08mi in Vermont. 0.1%
Quebec Route 124 is 326 km.
It becomes Highway 124 in Ontario, a good 7 km in length.
K-27 runs for 226 miles in Kansas, then turns into the southern segment of Nebraska Highway 27, which runs for 0.78 miles to US 34.
K-99 goes from the Oklahoma border to the Nebraska border. NE 99 then only goes 13 miles north.
Quote from: andrepoiy on March 01, 2022, 12:19:38 AM
Quebec Route 124 148 is 326 km.
It becomes Highway 124 148 in Ontario, a good 7 km in length.
FTFY.
Another example: QC 141 (80.8 km) becomes VT 141 (only 0.8 km).
Quote from: 7/8 on March 01, 2022, 09:18:43 AM
Quote from: andrepoiy on March 01, 2022, 12:19:38 AM
Quebec Route 124 148 is 326 km.
It becomes Highway 124 148 in Ontario, a good 7 km in length.
FTFY.
Another example: QC 141 (80.8 km) becomes VT 141 (only 0.8 km).
whooops my bad, funny you knew what I was talking about
US 195 goes 93 miles in WA, while it is only half a mile in ID.
Quote from: Takumi on February 28, 2022, 11:26:48 PM
NC/VA 87: 239 miles in NC, 4 in VA.
Less notable but similar:
NC/VA-86 has 53.1 miles in North Carolina and 3.33 in Virginia.
NC/VA-96 has 112 miles in North Carolina and 7.83 in Virginia.
Quote from: jlam on March 01, 2022, 10:18:27 AM
US 195 goes 93 miles in WA, while it is only half a mile in ID.
US 131: 269.32 miles in MI, 0.64 miles in IN
Quote from: jlam on March 01, 2022, 10:18:27 AM
US 195 goes 93 miles in WA, while it is only half a mile in ID.
And before US 95 was rebuilt at the south end of US 195, it too had an absurdly short section. US 95 in WA was barely 1 mile long between its two sections in ID, which total 539 miles long.
MD 97 is 55 miles and PA 97 is only 9.3.
US 222 is 91 miles in PA and 3.6 in MD
This one is fun since it involves three states and four segments with the longest and really short shortest in the same state:
US 340
17 miles in MD
0.6 miles in VA
16.4 miles in WV
116 miles in VA again.
OR 35 and WA 35 (US 26 on Mt Hood to WA 14), in a debatable example, as WA 35 isn't signed on the Washington side of the Hood River Bridge.
Bonus: ORH 26 and WA 35, extending the Oregon side west to the west end of the Ross Island Bridge.
Also: OR/ID 52, with the Oregon portion being the extremely short end.
Quote from: DandyDan on March 01, 2022, 05:36:55 AM
K-99 goes from the Oklahoma border to the Nebraska border. NE 99 then only goes 13 miles north.
And it crosses Oklahoma from north to south too. It no longer connects to Texas 99, however.
West Virginia's best example is one that disappears in Maryland. WV-28, which runs 151 miles from Huntersville (WV-39) to almost Ridgeley, then enters Cumberland on the Canal Parkway (unsigned MD-61) that is only 1.9 miles long. I shouldn't include this wimpy one is WV-37, which is a tad more than 39 miles and crosses the Big Sandy River to become Spur KY-3, which is a microscopic 280 feet long.
In addition to the OH-32 example, there are some not so impressive short stubby intrusions into West Virginia: PA-21 is only about 51 miles, which changes over to WV-891 that is a mere 2.3 miles long. My favorite is VA-311 that runs only about 42 miles then enters West Virginia with the same number (WV-311), which clocks in at an even 4 miles (this was extended into West Virginia as a result of multiplexing US-60 onto the eventual path of I-64).
Dishonorable mention is VA-259/WV-259, which runs about 27 miles in Virginia, runs about 45.5 miles in West Virginia, then crosses back over in Virginia for not quite 5 miles.
VA 160 just runs from VA 68 near Appalachia to the state line, but KY 160 continues through Harlan, Letcher, and Knott counties for a significant distance.
International border, but in the same vein so I say it counts. US 395 travels for over 1300 miles through four states… and then crosses into British Columbia, where it continues as BC 395 and then ends after just 2.5 miles.
Quote from: DandyDan on March 01, 2022, 05:36:55 AM
K-27 runs for 226 miles in Kansas, then turns into the southern segment of Nebraska Highway 27, which runs for 0.78 miles to US 34.
And even if they connected all the N-27 segments, it would hit SD and become the roughly 3.5 mi SD 391.
Also in the same area, you have WY/NE/IA/IL 92, which is around 100 miles in Illinois, 280 miles in Iowa, 490 miles in Nebraska, and a measly 17 miles in Wyoming.
Not as extreme as many of these, but still amusing: ID 41 (39 miles) turns into WA 41 (0.4 miles) -- southbound only. The north end of the highway runs along the state line (https://www.google.com/maps/place/Newport,+WA+99156/@48.1804949,-117.0463762,15.58z/data=!4m5!3m4!1s0x5362238aa17a0853:0x82b24cc02f17c1c9!8m2!3d48.1796277!4d-117.0432583?hl=en), and for some reason, the southbound lane got its own unsigned Washington state route number (though it appears to be fully maintained by Idaho).
Could you count I-41?
176 miles in Wisconsin and less than a mile in Illinois.
I know OH-49 is 153 miles long and starts in Trotwood just west of Dayton and travels up to the Michigan state line and becomes M-49 (the only state highway in Michigan to continue as the same highway number from another state). M-49 ends 25 miles into the state so this might not be the most extreme but M-49 most certainly is nowhere nearly as long as OH-49.
US 58 runs 508 miles in VA → barely 1/2 mile in TN
US 206 runs nearly 130 miles in NJ → under 1/2 mile in PA
DE 1 runs 102 miles → MD 528 runs 9 miles
MN 210 runs for 228 miles and ND 210 runs for 3.
Not that much but 8.3 mile RI 15 becomes 0.23 mile MA 15.
Can't believe I forgot this one:
DE 896: 21.13 miles
MD 896: 0.21 miles
PA 896: 33.772 miles