Former US highway segments

[robbones]

What does each state name the former US highway going through a town? For example, Mississippi renames its former segment MS 1xx.

[Bruce]

A section of US 99 from Tacoma to Everett (via Seattle and the Alaskan Way Viaduct) is now WA-99. A small section of US 10 along the Yakima River is now WA-10.

Some of the other sections are now business Interstate routes or just local thoroughfares.

[froggie]

What does each state name the former US highway going through a town?

With few exceptions, Minnesota's former US highway alignments are now county state-aid routes.  A notable exception is MN 61 northeast of Duluth.

The four examples we have in Vermont are VT 4A, VT 7A, VT 7B, and BUSINESS US 4 (Rutland).

[DandyDan]

In most areas, old US highway segments probably become locally maintained roads, either by the county or the city the road goes through.   Here in Nebraska, they get rid of old segments of US highways to local control as fast as reasonably possible.

[US71]

Arkansas uses either Business Route designations or State Route designations... IF they don't totally surrender them to the city or county.

Old 71 in Fayetteville is 71B,  Old, old 71 in Bentonville is SW A St
Old 62 in Fayetteville is AR 180

Old 62 in Rogers is AR 12 in places, a city street in others.

[bzakharin]

NJ has a hodge-podge. There are some business routes, especially on old US-1 segments. old US-9 in Cape May County is now NJ-109. Sometimes they get creative. Old US-1&9 became NJ 139. Delaware annoyingly signs old US-202 as DE-202 when they are right next to each other, confusing everyone but the locals.

[Brandon]

Depends on the municipality or township doing the signing in Illinois.  Some are simply marked with their names (Ogden Ave for example for former US-34), others are marked as "Old US Rte XX", as in "Old US Rte 66".

In Michigan, they tend to be marked as "Old XX" as in "Old 27" in rural areas.  Urban areas are simply marked with the street name (Grand River Ave for example for former US-16).

[billtm]

Recently in Indiana, former US 31 through Kokomo became state road 931.

[hbelkins]

Kentucky is very inconsistent. In some cases, the regular route goes through downtown and the bypass gets a "BY-PASS" banner. See US 127 through Lawrenceburg, Harrodsburg and Danville for examples. In other places, the bypass gets the main designation and the old route becomes "BUSINESS" US xx. The new US 68 alignment in Glasgow is a good example of this. Then there's US 31EX in Mt. Washington.  (US nnX being the internal designation for business routes that somehow made its way onto signage there).

And there are also instances where the old route gets a state route designation or becomes a local road.

[WashuOtaku]

Depends on the circumstances involved.  For North & South Carolina, neither really let go of their US Routes, they typically convert old sections into a Alternate route or Business loop.

When they do not make a Alt/Bus change:  small sections may be downgraded to secondary roads; longer sections may be replaced by existing or new state highway.

[Eth]

In Georgia, a few different things can happen:

(Remember that in Georgia, US routes are merely overlaid onto state routes, which are always signed. There cannot be a US route without a corresponding state route.)

1) The old route is turned back to the county and has no* signed number.

2) If the old route is covered by other state routes already (maybe with minor extensions), those numbers will remain in place and a Business US route is overlaid (see US 19/41 in Griffin). Alternatively, the old route might keep its existing state route number with a new state route number assigned to the bypass along with the US route mainline (see US 29 in Auburn/Winder or US 78 in Athens).

3) It will otherwise usually be numbered as a business route of whatever the corresponding state route is - e.g. if US 27 bypasses a town, it will be designated Business GA 1; a US 1 bypass would be Business GA 4; a US 41 bypass would be Business GA 3/7/11/18/19 (depending on where in the state), etc. These are usually not accompanied by Business US routes (see US 78 in Monroe or US 278 in Dallas), though occasionally they are (see US 129/441 in Eatonton).

4) Every now and then, Georgia will take the opposite approach and sign the bypass as, well, the bypass (see US 129/441 in Madison or US 441 in Dublin). This practice seems to be most common in the central part of the state.

* Some rural counties do put county road numbers on street blades along with the name of the road, but that's it.

[roadman65]

It will be interesting to see what NJ does to the old US 206 when the Hillsborough Bypass finally gets done.  Most likely another NJ 180 or NJ 170 series numbers.  Only US 1 and NJ 33 ever got business bannered old routes for their old alignments and US 22 got for a long while US 22 Alternate.  I also heard once that NJ 166 was a US 9 Alternate when the GSP first opened to traffic, but I do not know how long that lasted though.

[robbones]

Recently in Indiana, former US 31 through Kokomo became state road 931.

When did they reroute US 30 in Fort Wayne? I noticed IN 930 driving through there the other day.

[US81]

I would say Texas has a hodgepodge, too, although there are several places where former US xx is now TX xx (former US 81 = TX 81, former US 75 = TX 75, etc.)  There are the occasional daughter numberings extant, like Spur 580 (former US 80) and Spur 581 (former US 81).   Until recently there were a lot of decommissioned US highways that had become Interstate Business Loops, but in the last +/- ten years, many have lost the Bus Loop designation.

There is a lot of street blade signage in the manner of "Old US 80" or "Old Hwy 20" although many former US Highway segments are signed as and known locally as "The Old [Town/City] Highway" eg, "The Old Dallas Highway", "The Old Temple Road" etc.

[tdindy88]

Recently in Indiana, former US 31 through Kokomo became state road 931.

When did they reroute US 30 in Fort Wayne? I noticed IN 930 driving through there the other day.

According to Wikipedia, SR 930 came to be in 1998 when US 24 and US 30 were rerouted onto I-469. Of course, INDOT would love nothing better than to get rid of SRs 930, 931 and 933.

[GaryV]

In Michigan, they tend to be marked as "Old XX" as in "Old 27" in rural areas.  Urban areas are simply marked with the street name (Grand River Ave for example for former US-16).

"Old 27" in Otsego County near Vanderbilt is actually signed "Old 27" on a county pentagon shield.

Of course, some decommissioned highways become state routes - M-25 and M-27 for example.

[Scott5114]

In the Kansas City suburbs, there's an exit from I-35 in Kansas for "Old Hwy 56". Can't make it much easier for old-alignment hunters than that...

[Kacie Jane]

In the Kansas City suburbs, there's an exit from I-35 in Kansas for "Old Hwy 56". Can't make it much easier for old-alignment hunters than that...

In addition to SR 99, there are two exits off I-5 in Washington for "Old Hwy 99".  One down south by Vancouver, the other up north just south of Mount Vernon.

[Laura]

Most former US highway segments in Baltimore City now go by their street names alone.

However, there is an older alignment of US 1 named as Alt 1. It is not signed within the city limits, though.
US 111 is now MD 45.
US 140 is now MD 140.
The very original routing of US 301 is now MD 648.

[Brian556]

Old 27" in Otsego County near Vanderbilt is actually signed "Old 27" on a county pentagon shield.

This is also done in Lake County, Florida. The old road was originally signed "OLD 441" in a US shield, but was later signed "OLD 441" in a county shield, after the state gave the old road to the county.

[freebrickproductions]

Here in North Alabama, if the highway is put on a new street, then they rename the old street "Old Highway X". Old Highway 431 over in Hampton Cove is a good example of this. For some reason however, The old AL 20 alignment in Huntsville is still named Highway 20.

[golden eagle]

What does each state name the former US highway going through a town? For example, Mississippi renames its former segment MS 1xx.

Except in Jackson, where they were turned over to city control, which already had local names (Medgar Evers Drive and Woodrow Wilson Blvd. for the former US49, State Street for US 51).

[CrystalWalrein]

I know that the segment of US 9 left behind when the Mullica River bridge opened was reassigned to NJ 167. I'm also wondering if the segment of US 9 up to Beesley's Point Bridge will also be transferred to the Garden State Parkway and a new number assigned to that route, or if it'll be downloaded to Cape May County. The latter seems more likely as the state transitions from keeping old alignments. (NJ 167 should just be turned over to Port Republic and Bass River Township, and NJ 156 should go to Mercer County.)

[robbones]

Can anybody in Illinois confirm if SR 251 was US 51?

[PHLBOS]

In MA, many former US 1 & US 3 segments became MA 1A & MA 3A respectively; although when US 1 through Boston was rerouted onto I-93 & 95 in 1989-1990, the former-US 1 along Storrow Drive, the Fenway, Jamaicaway etc. was not given another route number.

Prior to the implementation of the Interstate system, when an early portion of I-95 was built in MA (north of Danvers); it was originally designated as US 1 and the former-US 1 was designated as MA 17.  When the new US 1 became I-95; MA 17 reverted back to its old US 1 designation, a practice that (in most instances) is no longer adhered to today... a former US route going back to its pre-highway road when a US highway receives an Interstate number.