Originally determined eligible in the Caltrans 1985 Historic Concrete Arch Bridges in California Thematic Resources study; its continued eligibility was confirmed in the 2004 Caltrans Historic Bridge Inventory update: Concrete Arch Bridges.
Bridge number 04C0189 is a reinforced-concrete, earthen-filled, elliptical bridge. This one-arch span bridge is the longest earthen-filled reinforced-concrete span in California. The main span length of 150 feet approaches the maximum length an earthen-filled bridge can have. Alterations include modern railings.