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Ellis Rd over Simmerly Slough

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

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

Ellis Rd over Simmerly Slough in Yuba 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 4 (poor condition) on the 0-9 scale.
It was built in 1928, making it 97 years old at the 2025 inventory.
It carries about 40 vehicles a day (traffic count year 2013).
Its listed owner is the county highway agency.
It is one of 9 of the 127 inventoried bridges in Yuba County rated poor (7.1%); 9 (7.1%) 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
State Route 70 over Feather River Blvd	1956	37,500	Good
State Route 70 over Yuba River UP RR Spur	1960	37,500	Good
State Route 70 over W70-beale Road Off-ramp	1956	37,500	Fair
State Route 70 over First Street	1960	37,500	Good
State Route 65 over Grasshopper Slough	1915	25,000	Fair
State Route 65 over Best Slough	1915	25,000	Good