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State Route 36 over South Fork Cottonwood CR

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

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

State Route 36 over South Fork Cottonwood CR in Tehama 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 1969, making it 56 years old at the 2025 inventory.
It carries about 470 vehicles a day (traffic count year 2015).
Its listed owner is the state highway agency.
It is one of 167 of the 447 inventoried bridges in Tehama County rated good (37.4%); 21 (4.7%) 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 concrete multiple box beam
Length	about 359 ft
Location	02-teh-036-r25.54
NBI structure number	08 0021
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Interstate 5 over Biggs Creek	1940	36,500	Good
Interstate 5 over Taylors Wash	1946	36,000	Fair
Interstate 5 over Thomes Creek	2011	29,500	Fair
Interstate 5 over Kopta Creek	1965	29,000	Fair
Interstate 5 over Las Flores Creek	1965	28,000	Good
Interstate 5 over Branch Coyote Creek	1965	28,000	Good