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Interstate 5 over Willow Spring Creek

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

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

Interstate 5 over Willow Spring Creek in Yolo County, California, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
It was built in 1970, making it 55 years old at the 2025 inventory.
It carries about 23,500 vehicles a day (traffic count year 2014).
Its listed owner is the state highway agency.
It is one of 121 of the 274 inventoried bridges in Yolo County rated good (44.2%); 12 (4.4%) 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

Component	Rating (2025)	FHWA scale meaning
Culvert	7	Good condition


Structure	Continuous concrete culvert
Length	about 25 ft
Location	03-yol-005-r17.50
NBI structure number	22 0183
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Interstate 80 over Enterprise Blvd	1951	145,000	Good
Interstate 80 over County Road 32	1962	135,000	Good
Interstate 80 over Yolo Causeway West	1962	135,000	Good
Interstate 80 over Yolo Causeway East	1963	135,000	Good
Interstate 80 over Bike & Pedestrian Tunnel	2001	128,000	Fair
US Hwy 50 (I-305) over Westacre Rd	1951	90,000	Poor