Washington Interstate 90
1957 specification guide sign shield. Manufactured between 1957 and 1970.
This sign in Snoqualmie Pass has been replaced.
Photo by Jeff Royston, 7/28/2007.
1957 specification guide sign shield. Manufactured between 1957 and 1970.
This sign in Snoqualmie Pass has been replaced.
Photo by Jeff Royston, 7/28/2007.