Alternate US routes: Suffixed or bannered?

[CL]

Utah alternate routes used to be bannered before all of them were eliminated in the '70s. From then until 2008 Utah didn't have an alternate route until UDOT decided to recognize US-89A (before they signed it as SR-11).

[hbelkins]

North Carolina - suffix for alternate, banner for the rest

I've never seen a suffixed route in North Carolina, just bannered.

I just looked up a few alternate routes that I know of on Google Maps, and according to the streetview images all have banners.

The US routes I'm familiar with in western North Carolina that have alternate routes (321, 221, 25, 74, etc.) all have the suffix "A" instead of banners.

One example:

Another:

And if you ever wanted to know what four digits would look like in a US shield:

[deathtopumpkins]

I've never been to western NC, and the routes I looked at as examples were along US 64 and US 264 mostly. It may be that the A rather than ALT is older practice and all of the alternate routes in the eastern part of the state are relatively new.

[agentsteel53]

I've seen a historic photo of a US 80A from Texas, but I do not know if that is in recent vogue.  Hell, I do not know of any extant alternate routes in Texas that still exist.

[TheStranger]

Hell, I do not know of any extant alternate routes in Texas that still exist.

The most prominent one I can think of is Alternate US 90 through Houston (and for quite a bit of distance westward), given the banner treatment:
https://www.aaroads.com/texas/ih010/i-010_eb_exit_603_02.jpg
http://www.okroads.com/031605/bw8atus90alt_01.JPG

Alternate US 77 also gets the banner style:
https://www.aaroads.com/texas/sh050-099/sh-072_n_us_077a_02.jpg

[agentsteel53]

The most prominent one I can think of is Alternate US 90 through Houston (and for quite a bit of distance westward), given the banner treatment:

wow totally forgot about that one, despite the fact that this 1961-spec shield still is around:

[TheStranger]

Interesting to see the "Old Spanish Trail" initials in button copy there...wonder why that was removed, considering the name is still in use!

So that adds Texas to the list of "in-shield banner" jurisdictions (albeit probably for only a few examples) I think several other states have been listed so far that do this practice.

[Avalanchez71]

I've seen a historic photo of a US 80A from Texas, but I do not know if that is in recent vogue.  Hell, I do not know of any extant alternate routes in Texas that still exist.

Where did the ALT US 80 go besides El Paso?

[hotdogPi]

Since this thread has been bumped... I prefer suffixes to banners. 1A can easily be followed by 1B and 1C if you need to create another one (and New Hampshire and New York are known for doing this), while 1 Alternate can only be duplicated.

[US71]

Since this thread has been bumped... I prefer suffixes to banners. 1A can easily be followed by 1B and 1C if you need to create another one (and New Hampshire and New York are known for doing this), while 1 Alternate can only be duplicated.

Arkansas generally uses Letters for Business (B) or Spur (S).  I know of one instance of T (AR 7T [Truck] Russellville.

[Avalanchez71]

Since this thread has been bumped... I prefer suffixes to banners. 1A can easily be followed by 1B and 1C if you need to create another one (and New Hampshire and New York are known for doing this), while 1 Alternate can only be duplicated.

Arkansas generally uses Letters for Business (B) or Spur (S).  I know of one instance of T (AR 7T [Truck] Russellville.

Arkansas also has y for wye.  US 412Y in Paragould for instance.