Pennsylvania State Highway 320

1970 specification highway marker.
Overheads on the U.S. 1 southbound off-ramp to Pennsylvania 320 at Springfield.
Photo by Alex Nitzman, 8/15/2004.
1970 specification highway marker.
Overheads on the U.S. 1 southbound off-ramp to Pennsylvania 320 at Springfield.
Photo by Alex Nitzman, 8/15/2004.