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SR 108 over Sullivan Crk / Bergel Rd

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

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

SR 108 over Sullivan Crk / Bergel Rd in Tuolumne County, California, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 2004, making it 21 years old at the 2025 inventory.
It carries about 20,800 vehicles a day (traffic count year 2009).
Its listed owner is the state highway agency.
It is one of 72 of the 125 inventoried bridges in Tuolumne County rated fair (57.6%); 8 (6.4%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous prestressed concrete multiple box beam
Length	about 958 ft
Location	10-tuo-108-r2.78
NBI structure number	32 0067
Condition class	Fair

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 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
State Route 49 over Woods Creek	1951	19,900	Good