Rockville Bridge[Map · Street View] Through truss bridge over Virgin River on Bridge Street in Rockville Open to traffic Built 1924, NRHP listed 1995, condemend 2012, successful petition for rehab 2016.
Washington Fields Bridge[Map] Lost Pratt pony truss bridge over Virgin River on South Washington Fields Road Replaced by a new bridge Built ca. 1936; replaced 1976
Zion - Mt Carmel Tunnel[Map] Tunnel on Hwy 9/Zion Park Blvd Open Construction of the 1.1 mile Zion-Mount Carmel Tunnel began in the late 1920's and was completed in 1930. At the time that the tunnel was dedicated, on July 4, 1930, it was the longest tunnel of it's type in the United States.