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West Branch Road over West Branch Mill Creek

Del Norte County, California · rated Poor in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

West Branch Road over West Branch Mill Creek in Del Norte County, California, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
It was built in 1950, making it 75 years old at the 2025 inventory.
It carries about 10 vehicles a day (traffic count year 2003).
It is one of 9 of the 97 inventoried bridges in Del Norte County rated poor (9.3%); 9 (9.3%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings

Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.

Bridge	Built	Vehicles/day	Condition
U.S. Highway 101 over Elk Creek	1944	21,500	Good
U.S. Highway 101 over Gilbert Creek	1953	7,300	Good
U.S. Highway 101 over Rowdy Creek	1951	7,250	Good
U.S. Highway 101 over Dominie Creek	2021	7,250	Good
U.S. Highway 101 over Smith Riv South Bank Rd	2023	7,200	Good
U.S. Highway 101 over Smith River Overflow	1955	6,700	Good