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Huasna Townsite Rd over Huasna River

San Luis Obispo County, California · rated Poor in the 2025 National Bridge Inventory

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

Huasna Townsite Rd over Huasna River in San Luis Obispo County, California, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 0 (failed condition, out of service) on the 0-9 scale.
It was built in 1965, making it 60 years old at the 2025 inventory.
It carries about 288 vehicles a day (traffic count year 2008).
Its listed owner is the county highway agency.
It is one of 22 of the 402 inventoried bridges in San Luis Obispo County rated poor (5.5%); 22 (5.5%) 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

Component	Rating (2025)	FHWA scale meaning
Deck	0	Failed condition, out of service
Superstructure	0	Failed condition, out of service
Substructure	0	Failed condition, out of service


Structure	Timber stringer or multi-beam girder
Length	about 173 ft
Location	3.1 Mi SE of Huasna
NBI structure number	49C0147
Condition class	Poor

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 Stenner Creek	1978	62,000	Good
U.S. Highway 101 over Perfuma Creek	1948	56,000	Good
US Highway 101 NB over Santa Maria River	1962	56,000	Fair
U.S. Highway 101 over Brisco Rd	1956	56,000	Good
U.S. Highway 101 over Whitehorse Draw	1952	54,000	Good
US Highway 101 over St Rte 41 (@PM15.96)	2010	53,000	Good