Wyoming Interstate 25
![Wyoming Interstate 25 sign.](img/WY/WY19610253i1.jpg)
1957 specification highway marker.
Southbound Business Loop Interstate 25/U.S. 20-26-87 in Casper near the southern terminus.
Photo by Andy Field, 9/2/2004.
1957 specification highway marker.
Southbound Business Loop Interstate 25/U.S. 20-26-87 in Casper near the southern terminus.
Photo by Andy Field, 9/2/2004.