California Interstate 80
1957 specification highway marker.
Mid-1950s (pre-interstate) black signs on the US-40 freeway through Auburn. The US-40 shield was replaced by an I-80 somewhere around 1958.
Photo by Brian S, 1980.
1957 specification highway marker.
Mid-1950s (pre-interstate) black signs on the US-40 freeway through Auburn. The US-40 shield was replaced by an I-80 somewhere around 1958.
Photo by Brian S, 1980.