Most emasculated route?

[bing101]

US-50 used to take a turn for US/CA-99 then take I-205, I-580 and I-80 to get the North San Joaquin Valley route to San Francisco. That was US-50 was realigned with I-305 in Sacramento to connect to I-80 and ended at the I-80 interchange in West Sacramento, CA. Its another emasculated route.

[TheHighwayMan3561]

Not sure if this is what you mean, but for Minnesota, MN-100 used to form a ~60-70 mile circle around the Twin Cities. Today it remains as a 16-mile freeway through a number of western suburbs.

Adding MN 101 (excluding the two Chanhassen sections): 6 miles remain of 46, 13% of the original route.

It's still about 100 miles long, but MN 56 is now about 1/3 its maxlmum length.

[kurumi]

The top 3 that I know of in Connecticut:
CT 101: was 91.8 miles in CT (1932-1935), now 9.46 (-90%, -82.3 miles)
CT 14: was 87.8 miles in CT (1932-1941), now 24.3 (-72%, -63.5 miles)
CT 27: was 9.84 miles, now 3.21 (-66%)

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

[MNHighwayMan]

Not sure if this is what you mean, but for Minnesota, MN-100 used to form a ~60-70 mile circle around the Twin Cities. Today it remains as a 16-mile freeway through a number of western suburbs.

Adding MN 101 (excluding the two Chanhassen sections): 6 miles remain of 46, 13% of the original route.

It's still about 100 miles long, but MN 56 is now about 1/3 its maxlmum length.

Yeah, I remembered MN-101 after I posted. It's definitely up there as well. And MN-56 is a good addition too – I completely forgot about that one.

[jp the roadgeek]

The top 3 that I know of in Connecticut:
CT 101: was 91.8 miles in CT (1932-1935), now 9.46 (-90%, -82.3 miles)
CT 14: was 87.8 miles in CT (1932-1941), now 24.3 (-72%, -63.5 miles)
CT 27: was 9.84 miles, now 3.21 (-66%)

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

One more emasculated route: 

CT 25:  From 1963-1974, was about 71.5 mi., now 28.6 mi. (-60%, -42.9 mi.)

[DandyDan]

In Iowa, IA 64 used to continue west from Anamosa through Cedar Rapids and Des Moines to Council Bluffs.

[CNGL-Leudimin]

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

In that case, most 3dus out West. Some were significantly lengthened to make up for the lack of 2dus.

[1995hoo]

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

Does that mean the short routes are showers, not growers? 

[Max Rockatansky]

FL 27 lost all its mileage to FL 997 and FL 9336 because everyone kept confusing it with US 27. 

[jwolfer]

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

Does that mean the short routes are showers, not growers? 

A grower would be something like Florida SR 200.. most of it hidden under the folds of US 301.. but over 200 miles when full accounted for

Z981

[sparker]

Historically, the longest route in CA to be truncated -- by the usual circumstance, commissioning of a US highway along the route -- would be the old SSR 7.  Its original length encompassed what was the 1950's-era full length of SSR (later CA) 107 (aka LRN 164) from the junction of Hawthorne Blvd. and Pacific Coast Highway in south Torrance, then segueing onto Sepulveda Blvd. (LRN 158) north through West Los Angeles and into the San Fernando Valley; multiplexing with SSR 118 (LRN 9) through San Fernando itself, then turning northwest onto Foothill Blvd. (LRN 157), which eventually merged into Sierra Highway (LRN 23), which it followed north on present CA 14 and US 395 to the Nevada state line (the last couple of miles north of SSR 89 were LRN 95).  SSR 7 reappeared near Hallelujah Junction NW of Reno, coming in on LRN 29 from the state line to LRN 73 at Johnstonville, and then following that route NE and north to the Oregon state line north of Alturas.  Of course, the entire route north of Inyokern is now US 395, with the portion from Sylmar to Inyokern (via Palmdale and Mojave) now CA 14.  The US 395 commissioning occurred ca. 1935; US 6 taking over the now-CA 14 segment occurred three years later.  And SSR 7 itself was rerouted at its southern end when LAX was expanded during and after WWII; instead of detouring through Inglewood and down Hawthorne Blvd.. Sepulveda Blvd. was extended south through Westchester, with Alternate US 101 (LRN 60) intersecting it at a 5-way intersection at Sepulveda and Imperial Highway, just south of LAX; this became the southern terminus of SSR 7 from 1945 to 1959, when LAX runways were lengthened to accommodate the 707's and DC-8's of the era.  That's when the cut-and-cover airport tunnels were constructed, and LRN 60/US 101A was rerouted through the tunnels, cutting off westward a few blocks north of Century Blvd., which was reconfigured as the main airport entrance.  SSR 7 was cut back to that point -- but only lasted another 5 years, as the system renumbering replaced it with I-405.  The number "7" was transplanted as new CA 7 to the Long Beach Freeway, replacing SSR 15, deleted because of I-15; but it too disappeared 20 years later when I-710 was commissioned over that facility.  CA 7 is now a short truck-crossing connector from I-8 to the Mexican border east of Calexico in rural Imperial County (my, how the mighty have fallen!). 

[1995hoo]

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

Does that mean the short routes are showers, not growers? 

A grower would be something like Florida SR 200.. most of it hidden under the folds of US 301.. but over 200 miles when full accounted for

Z981

I typed that utterly backwards, but upon rereading it it makes no sense either way. Oh well. It was early morning and I should know better than to post before I'm fully alert and awake!

[tdindy88]

Probably the best two cases from Indiana would be SR 29 and SR 43.

State Road 29 once went from Madison along the Ohio River up to Michigan City on Lake Michigan along the old Michigan Road. It got severily truncated due to US 421 and US 35 being introduced and now consists solely of a 30-mile stretch from Boyleston to Logansport in North central Indiana. This is why SR 129 and SR 229 are located in Ripley County, far away from the current SR 29, at one time they were much closer to the parent route.

State Road 43 once traveled from Solsberry in Greene County north all the way to Michigan City. Over time it was truncated by the addition of US 231 and US 421 to two small stretches in eastern Greene County and from Lafayette to Reynolds, totally 40 miles total. Even in the past few years the northern stretch was truncated even more from Downtown Lafayette up to I-65.

[Stephane Dumas]

QC-155 and QC-161 seems to fit that category. When the gap of A-55 opened. QC-155 in the South Shore of the St-Lawrence River was decommisioned while the end of PQ-161 who was once at St-Celestin is now at TCH-20.

[jwolfer]

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

Does that mean the short routes are showers, not growers? 

A grower would be something like Florida SR 200.. most of it hidden under the folds of US 301.. but over 200 miles when full accounted for

Z981

I typed that utterly backwards, but upon rereading it it makes no sense either way. Oh well. It was early morning and I should know better than to post before I'm fully alert and awake!

Blood was elsewhere LOL

Z981

[1995hoo]

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

Does that mean the short routes are showers, not growers? 

A grower would be something like Florida SR 200.. most of it hidden under the folds of US 301.. but over 200 miles when full accounted for

Z981

I typed that utterly backwards, but upon rereading it it makes no sense either way. Oh well. It was early morning and I should know better than to post before I'm fully alert and awake!

Blood was elsewhere LOL

Z981

I was typing with my left hand. 

[jwolfer]

Going the other way is CT 201:
Originally 2.19 miles in 1934, it grew to 20.1 miles in 1963 (917% its original size). I'll leave it to you guys what term to use for that :-)

Does that mean the short routes are showers, not growers? 

A grower would be something like Florida SR 200.. most of it hidden under the folds of US 301.. but over 200 miles when full accounted for

Z981

I typed that utterly backwards, but upon rereading it it makes no sense either way. Oh well. It was early morning and I should know better than to post before I'm fully alert and awake!

Blood was elsewhere LOL

Z981

I was typing with my left hand. 

Z981

[DandyDan]

The only Nebraska highway that really fits is NE 63. It used to encompass the segment of NE 66 that goes west through Ashland over to US 77.

[Eth]

The only serious route truncation I can recall in Georgia was ~1993 when GA 13 north of Gainesville was superseded by GA 365. That chopped the route in half, dropping it from 99 miles to 49.

EDIT:
Wait, no, I can do much better. GA 50 used to be a cross-state route, from Eufaula, AL all the way to Jekyll Island along US 82 and US 84. Then GA 520 came along, cutting GA 50 all the way back to Dawson. From 244 miles down to 46.

[sbeaver44]

US-223 in Ohio used to run off of US-23 at Monroe St. (Current SR-51) all the way into downtown Toledo, then head Northeast on Summit St. (Current SR-65) to I-280 at the Craig Bridge.

Today it's just a short mile-long multiplex with US-23 from Monroe St. Up to the Michigan Line.

What is the point of US 223 in Ohio as it currently exists?

Nexus 6P

[hotdogPi]

US-223 in Ohio used to run off of US-23 at Monroe St. (Current SR-51) all the way into downtown Toledo, then head Northeast on Summit St. (Current SR-65) to I-280 at the Craig Bridge.

Today it's just a short mile-long multiplex with US-23 from Monroe St. Up to the Michigan Line.

What is the point of US 223 in Ohio as it currently exists?

Nexus 6P

It's so that it's not a single-state route. When the US routes were created, there were some guidelines on their creation, e.g. "must be fairly direct" and "must be 300+ miles or cross a state line".

See also: 166 and 400

[GaryV]

US-223 in Ohio used to run off of US-23 at Monroe St. (Current SR-51) all the way into downtown Toledo, then head Northeast on Summit St. (Current SR-65) to I-280 at the Craig Bridge.

Today it's just a short mile-long multiplex with US-23 from Monroe St. Up to the Michigan Line.

What is the point of US 223 in Ohio as it currently exists?

Nexus 6P

It's so that it's not a single-state route. When the US routes were created, there were some guidelines on their creation, e.g. "must be fairly direct" and "must be 300+ miles or cross a state line".

See also: 166 and 400

Before the freeways, US-223 entered Ohio further west, on a separate road from US-23, near Sylvania.  US-23 was a ways to the east, going south from Ypsilanti through Ida and Temperance, entering Ohio nearly due north of downtown Toledo.

After the US-23 freeway was built, some of US-223 still was on surface streets in Sylvania.  Ohio and Michigan petitioned AASHTO to move US-223 to its current configuration in 1977.  Why they didn't truncate US-223 to the intersection with US-23 at that time is the question.

[thenetwork]

US-223 in Ohio used to run off of US-23 at Monroe St. (Current SR-51) all the way into downtown Toledo, then head Northeast on Summit St. (Current SR-65) to I-280 at the Craig Bridge.

Today it's just a short mile-long multiplex with US-23 from Monroe St. Up to the Michigan Line.

What is the point of US 223 in Ohio as it currently exists?

Nexus 6P

I guess as long as Michigan co-signs US-223 with US-23, Ohio has to recognize it to the first available exit, which is about 1-1/2 miles inside the border.  It would have made a little more sense if they actually extended the 23/223 multiplex a few miles down to the I-475 split when they took US-223 off of Monroe St.

[Max Rockatansky]

US-223 in Ohio used to run off of US-23 at Monroe St. (Current SR-51) all the way into downtown Toledo, then head Northeast on Summit St. (Current SR-65) to I-280 at the Craig Bridge.

Today it's just a short mile-long multiplex with US-23 from Monroe St. Up to the Michigan Line.

What is the point of US 223 in Ohio as it currently exists?

Nexus 6P

I guess as long as Michigan co-signs US-223 with US-23, Ohio has to recognize it to the first available exit, which is about 1-1/2 miles inside the border.  It would have made a little more sense if they actually extended the 23/223 multiplex a few miles down to the I-475 split when they took US-223 off of Monroe St.

I just drove the US 23/223 multiplex, it appears to just suddenly end on the US 23 freeway immediately entering Ohio.  The signage northbound just suddenly appears right before the Michigan state line without any warning. 

[7/8]

AsphaltPlanet beat me to Highway 2, which is the best example in Ontario, but there's some other Ontario ones worthy of mentioning. Three examples include:

Highway 20 - From 63.9 km to 1.9 km
Highway 5 - From 114 km to 12.6 km
Highway 24 - From >250 km to 74.5 km