by the United States National Park Service, Weekly List, National Register of Historic Places… (1985)
“ COLORADO, Denver County, Denver, 19th Street Bridge (Vehicular Bridges in Colorado TR) , 19th St. (02/04/85) COLORADO, Denver County, Denver, 20th Street Viaduct (Vehicular Bridges in Colorado TR) , 20th St. (02/04/85) COLORADO, Denver County, Denver, Broadway Bridge (Vehicular Bridges in Colorado TR) , Broadway Ave. (02/04/85) COLORADO, Eagle County, Red Cliff vicinity, Red Cliff Bridge (Vehicular Bridges in Colorado TR) , U.S. 24 (02/04/85) COLORADO, El Paso County, Colorado Springs, North Weber Street-Wahsatch Avenue Historic Residential District, N. Weber St. ”
