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Zenia Bluff Rd over Mud Creek

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

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

Zenia Bluff Rd over Mud Creek in Trinity 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 2003, making it 22 years old at the 2025 inventory.
It carries about 140 vehicles a day (traffic count year 2002).
Its listed owner is the county highway agency.
It is one of 112 of the 194 inventoried bridges in Trinity County rated good (57.7%); 7 (3.6%) 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
State Route 299 over East Weaver Creek	1962	7,125	Fair
State Route 299 over Weaver Creek	1953	5,375	Fair
State Route 299 over Little Browns Creek	1999	5,375	Good
State Route 299 over Trinity River	1980	4,450	Fair
State Route 299 over Indian Creek	1974	4,050	Fair
State Route 299 over Gray Creek	1966	3,800	Fair