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State Route 120 over South Fork Tuolumne Riv

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

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

State Route 120 over South Fork Tuolumne Riv in Tuolumne 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 1962 and reconstructed in 1999, making it 63 years old at the 2025 inventory.
It carries about 3,650 vehicles a day (traffic count year 2009).
Its listed owner is the state highway agency.
It is one of 45 of the 125 inventoried bridges in Tuolumne County rated good (36.0%); 8 (6.4%) 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


Structure	Continuous steel girder and floorbeam
Length	about 577 ft
Location	10-tuo-120-46.82
NBI structure number	32 0035
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Mono Way over Sullivan Creek	1991	25,060	Poor
SR 108 over Sullivan Crk / Bergel Rd	2004	20,800	Fair
SR 108 over Hess Avenue	2004	20,800	Fair
SR 108 over Peaceful Oak Rd	2013	20,800	Good
SR 108 over Mono Way	2013	20,800	Fair
State Route 49 over Woods Creek	1941	19,900	Good