US route numbers derived from a past state route number

[TheStranger]

A little twist on the route derivation thread, inspired by this post:

https://www.aaroads.com/forum/index.php?topic=25015.msg2423285#msg2423285

First thoughts that come to mind are US 57 and US 163, I wonder how many more there are (and if any of the New England routes retained their numbers into the US numbering era too).

[wanderer2575]

In Michigan, the US-16 designation replaced the existing M-16 designation.

Also, the Saginaw-Detroit stretch of US-10 was originally designated M-10.  (The M-10 designation was reused a couple times elsewhere and US-10 was later truncated to end west of Bay City.)

[froggie]

(and if any of the New England routes retained their numbers into the US numbering era too).

US 1 was the only such route "in full", though US 6 on the Cape was part of NE 6 (NE 6 turned north at Sagamore).

[ipeters61]

I heard a rumor that US-13 got its number in Delaware because the person who suggested to DuPont that it should be a 4 lane highway had 13 kids: https://en.wikipedia.org/wiki/U.S._Route_13#History.

EDIT - Granted, this really is more of a case of a "forced" US route number, if the rumor is true.

[US 89]

US 163

Are you referring to the modern one in Arizona and Utah? As far as I know, there was never an AZ or UT 163 in that area. US 163 replaced AZ 464, UT 47, and a bit of US 160 that was legislatively UT 9.

[cwf1701]

In Michigan, the US-16 designation replaced the existing M-16 designation.

Also, the Saginaw-Detroit stretch of US-10 was originally designated M-10.  (The M-10 designation was reused a couple times elsewhere and US-10 was later truncated to end west of Bay City.)

And Both times, the M-10 designation was used on a former route of US-10. The Flint M-10 later became BUS-US-10 and then BUS-M-54, and the current M-10 is the Lodge freeway.

[TheStranger]

US 163

Are you referring to the modern one in Arizona and Utah? As far as I know, there was never an AZ or UT 163 in that area. US 163 replaced AZ 464, UT 47, and a bit of US 160 that was legislatively UT 9.

Ahh I was mistaken yeah, I wasn't sure because 163 itself never fit the grid in any way and seems completely out of place so I wondered where the numbering even came from.

[US 89]

US 163

Are you referring to the modern one in Arizona and Utah? As far as I know, there was never an AZ or UT 163 in that area. US 163 replaced AZ 464, UT 47, and a bit of US 160 that was legislatively UT 9.

Ahh I was mistaken yeah, I wasn't sure because 163 itself never fit the grid in any way and seems completely out of place so I wondered where the numbering even came from.

usends suggests the original number for the route was 164, but it was bumped down by one because planners believed the odd/even rule applied to 3 digit routes as well. Interestingly it wouldn’t have intersected US 64 either, but it was probably close enough to not be a huge deal.

[NWI_Irish96]

US 6 in Indiana was already IN 6 before the US Highway System was created, but I've seen no indication that this was deliberate rather than a coincidence.

[Max Rockatansky]

I'm half convinced CA 195 and CA 95 were intended to be place holders for whatever segment of the US 95 family California could get.  CA 95 became US 395 and CA 195 became US 95. 

Conversely I don't know if this one is coincidental but I doubt it is.  AZ 95 was signed south of Quartzsite before US 95 was extended into Arizona.  US 93 between Kingman and Wickenburg was originally part of AZ 93.

[TheStranger]

I'm half convinced CA 195 and CA 95 were intended to be place holders for whatever segment of the US 95 family California could get.  CA 95 became US 395 and CA 195 became US 95. 

Conversely I don't know if this one is coincidental but I doubt it is.  AZ 95 was signed south of Quartzsite before US 95 was extended into Arizona.  US 93 between Kingman and Wickenburg was originally part of AZ 93.

Was AZ 93 created as an extension of US 93, then (north of US 60) added to the US 93 route a few years later?

I kinda wish AZ 93 still ran down Grand Avenue into Phoenix, or really just 93 in some form, though this is essentially being made academic by I-11.

[Max Rockatansky]

I'm half convinced CA 195 and CA 95 were intended to be place holders for whatever segment of the US 95 family California could get.  CA 95 became US 395 and CA 195 became US 95. 

Conversely I don't know if this one is coincidental but I doubt it is.  AZ 95 was signed south of Quartzsite before US 95 was extended into Arizona.  US 93 between Kingman and Wickenburg was originally part of AZ 93.

Was AZ 93 created as an extension of US 93, then (north of US 60) added to the US 93 route a few years later?

I kinda wish AZ 93 still ran down Grand Avenue into Phoenix, or really just 93 in some form, though this is essentially being made academic by I-11.

Yes, had ADOT gotten their way US 93 would have ended at the border with US 89.  Interestingly much of I-10 in the Gila Reservation was built alongside what was AZ 93. 

[TheHighwayMan3561]

US 6 in Indiana was already IN 6 before the US Highway System was created, but I've seen no indication that this was deliberate rather than a coincidence.

US 12 in Minnesota (from St. Paul to Hudson) and Wisconsin both were coincidentally originally State Highway 12.