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Piru Canyon Road over Reasoner Creek

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

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

Piru Canyon Road over Reasoner Creek in Ventura 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 1955, making it 70 years old at the 2025 inventory.
It carries about 700 vehicles a day (traffic count year 2019).
It is one of 201 of the 501 inventoried bridges in Ventura County rated fair (40.1%); 12 (2.4%) 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	Steel stringer or multi-beam girder
Length	about 41 ft
Location	7.1 Mi N Center Str.
NBI structure number	52C0174
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
U.S. Highway 101 over Hampshire Rd	1966	193,000	Fair
U.S. Highway 101 over Conejo School Rd	1966	193,000	Fair
U.S. Highway 101 over Rancho Rd	1970	193,000	Good
U.S. Highway 101 over S101-n23 Connector Ramp	1970	193,000	Good
U.S. Highway 101 over Moorpark Rd	1962	192,000	Fair
U.S. Highway 101 over Hillside	1982	192,000	Good