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State Route 49 over Downie River

Sierra County, California · rated Good in the 2025 National Bridge Inventory

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

State Route 49 over Downie River in Sierra County, California, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1938 and reconstructed in 1992, making it 87 years old at the 2025 inventory.
It carries about 1,200 vehicles a day (traffic count year 2015).
Its listed owner is the state highway agency.
It is one of 29 of the 66 inventoried bridges in Sierra County rated good (43.9%); 4 (6.1%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

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 395 over Long Valley Rd	1976	4,600	Good
U.S. Highway 395 over Long Valley Rd	1976	2,300	Good
State Route 89 over Little Truckee River	1982	2,000	Fair
State Route 49 over Smithneck Creek	1965	1,900	Good
State Route 89 over Turner Canyon	1975	1,400	Good
State Route 49 over Goodyears Creek	1972	1,200	Good