Washington Interstate 90
1970 specification guide sign shield. Manufactured between 1970 and 1990.
This 1970 style guide sign has the older small numbers.
Photo by Jake Bear and Daniel Brim, 3/13/2010.
1970 specification guide sign shield. Manufactured between 1970 and 1990.
This 1970 style guide sign has the older small numbers.
Photo by Jake Bear and Daniel Brim, 3/13/2010.