First Signed Highway

[Voyager]

What was the first signed US Highway? What was the first signed Interstate Highway?

[agentsteel53]

I believe the first I-shields appeared on the Kansas Turnpike in 1956.  I-70. 

dunno about the first US shield to be put up in the field, but the demonstration model at AASHO's meetings in 1926 was a Maine US 56.

[Marf]

These routes were marked in '22. Article: https://en.wikipedia.org/wiki/New_England_road_marking_system

[NE2]

France had signed routes in the 19th century. Thanks, Napoleon!
http://panotheque.free.fr/Disparition/RN51.html

[Roadgeekteen]

These routes were marked in '22. Article: https://en.wikipedia.org/wiki/New_England_road_marking_system

You just revived a 9 year old thread.

[Marf]

That was the point. 

[Roadgeekteen]

That was the point. 

Oh, so you revived this thread just so you could say that you did it? Well, snap out of it, it could get you banned if you keep doing it.