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State Route 299 over Pit River

Modoc County, California · rated Poor in the 2025 National Bridge Inventory

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

State Route 299 over Pit River in Modoc 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 3 (serious condition) on the 0-9 scale.
It was built in 1962, making it 63 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 1 of the 87 inventoried bridges in Modoc County rated poor (1.1%); 1 (1.1%) 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


Structure	Continuous concrete tee beam
Length	about 305 ft
Location	02-mod-299-17.95
NBI structure number	03 0005
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 395 over North Fork Pit River	1982	4,000	Fair
U.S. Highway 395 over Parker Creek	1954	4,000	Fair
State Route 299 over Rattlesnake Creek	1980	3,000	Good
State Route 299 over Rock Creek	1937	2,800	Good
U.S. Highway 395 over South Fork Pit River	1971	2,400	Fair
U.S. Highway 395 over South Fork Pit River	1971	2,400	Good