How do highway numbers used as street names change when the highway is rerouted?

[KCRoadFan]

From my travels, I've seen three main approaches:

1. Adding "Old" or "Business" to the name, like was done for the former routing of MO 7 in Camdenton when the bypass was built

2. Giving the road a new name not previously used, such as Osage Beach, Missouri (near the Lake of the Ozarks) did with the old alignment of US 54 along that resort town's main commercial strip, calling it "Osage Beach Parkway" after the freeway bypass was opened (pre-bypass, the former route was just called "Highway 54" with no other name)

3. Just keeping the name as is, like what O'Fallon, Illinois (an east suburb of St. Louis) did with regards to the main east-west road through town - address along that road are still designated as being on "West US 50" or "East US 50" even after US 50 itself was rerouted onto I-64

Anyway, what I'm curious about is as follows: throughout the country, do you know of any examples of cities, towns or counties where one of the streets or roads was just called by the highway number with no other street name (such as, for example, having a house with the address of "723 North Highway 93" in a town along US 93), but where the highway in question was bypassed or otherwise realigned so that it no longer follows the same road? And how did those jurisdictions change the street name (or not) as a result of the reroute?

[freebrickproductions]

The parts of what were once AL 20 east of I-65 in Huntsville just remained "Highway 20" or "Alabama Highway 20" after the highway was truncated to I-65.

[TheHighwayMan3561]

The former part of MN 7 east of TH 100 in St. Louis Park now designated Hennepin County 25 is still "Highway 7" for address purposes between 100 and Minnetonka Blvd, where the road becomes Lake St.

[JayhawkCO]

Where CO2 was truncated around Commerce City, it's still just called Highway 2.

[kphoger]

Just keeping the name as is, like what O'Fallon, Illinois (an east suburb of St. Louis) did with regards to the main east-west road through town - address along that road are still designated as being on "West US 50" or "East US 50" even after US 50 itself was rerouted onto I-64

This drives me batty.

The first time I was ever in O'Fallon, I was driving a delivery route and had a customer whose address was on "HWY 50".  I was coming into town on I-70/US-50 from the west.  So I got off at Exit #19-B, assuming the business must be east of town a bit.  I turned east onto US-50, never encountered the business or any address numbers resembling my customer's, and before long was out in the countryside.  So I eventually turned around, and only after I got back into town a ways did I realize what the deal was with their stupid street name.

And it also leads to this fun and confusing intersection, where you're already on "US Hwy 50" and then encounter a junction assembly for US Hwy 50.

[Quillz]

California just goes with "County Road." Like CR 99 in the Sacramento Valley.

[ClassicHasClass]

California just goes with "County Road." Like CR 99 in the Sacramento Valley.

And sometimes it's literally a county road, like ImpCo S80 (former US 80).

The old alignments of US 66/91/395 through the Cajon Pass are studded with "County Road" signs.

[pderocco]

California just goes with "County Road." Like CR 99 in the Sacramento Valley.

And sometimes it's literally a county road, like ImpCo S80 (former US 80).

I just drove through there yesterday, and they didn't get it quite right:

https://maps.app.goo.gl/EfTqALcrJkCaYsuA7

The cross street sign, S30, was correct.

[Scott5114]

This is exactly why numbered routes should also carry street names for addressing purposes. Little towns in Oklahoma can figure it out, so actual cities have no excuse.

In the case of the Las Vegas Strip, it was built along US-91, which was the original street name, but it became 5th Street and then Las Vegas Blvd. long before US-91, and then NV-604, was removed from it.

[Quillz]

This is exactly why numbered routes should also carry street names for addressing purposes. Little towns in Oklahoma can figure it out, so actual cities have no excuse.

In the case of the Las Vegas Strip, it was built along US-91, which was the original street name, but it became 5th Street and then Las Vegas Blvd. long before US-91, and then NV-604, was removed from it.

This is why CA-1 is usually known as PCH. I always think local names are better. Makes renumbering less of an issue. 

[Scott5114]

This is exactly why numbered routes should also carry street names for addressing purposes. Little towns in Oklahoma can figure it out, so actual cities have no excuse.

In the case of the Las Vegas Strip, it was built along US-91, which was the original street name, but it became 5th Street and then Las Vegas Blvd. long before US-91, and then NV-604, was removed from it.

This is why CA-1 is usually known as PCH. I always think local names are better. Makes renumbering less of an issue.

That also probably has to do with CA-1 already having the name "Coast Route" on ACSC signage before numbered routes were a thing.

[-- US 175 --]

Fort Worth still uses "Loop 820" for addressing/street blades along the part of I-20 that used to be marked I-820.

[kphoger]

Fort Worth still uses "Loop 820" for addressing/street blades along the part of I-20 that used to be marked I-820.

Oh, gosh, now that's ridiculous.
https://maps.app.goo.gl/UJffb4iPj5mwKCbk9