US Bridges

Santa Rosa RD over Arroyo Santa Rosa

Good

Ventura County, California · 2.4 MI W Moorpark RD · Structure no. 52C0104

Built
1972
53 years old, rebuilt 1993
Condition
Good
inspected April 2024
Type
Tee Beam
Concrete
Length
49 ft
1 main span
Daily traffic
19,000
2019 count
Owner
County
County Highway Agency

About this bridge

Santa Rosa RD over Arroyo Santa Rosa is a concrete tee beam carrying Santa Rosa RD over Arroyo Santa Rosa in Ventura County, California. It was built in 1972 and reconstructed in 1993, so it is 53 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 19,000 vehicles a day, roughly 3% of them trucks, projected to reach 28,402 by 2046. The structure is 49 ft (15 m) long and 69 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesSanta Rosa RD
CrossesArroyo Santa Rosa
Location2.4 MI W Moorpark RD
RouteCounty Highway 0
CountyVentura County
StateCalifornia
Coordinates34.23796, -118.90822
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length49 ft (15 m)
Longest span33 ft (10.2 m)
Deck width69 ft (21 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,000 (2019)
Projected traffic28,402 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Santa Rosa RD over Arroyo Santa Rosa built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1993.

What condition is Santa Rosa RD over Arroyo Santa Rosa in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does Santa Rosa RD over Arroyo Santa Rosa carry?

About 19,000 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Santa Rosa RD over Arroyo Santa Rosa?

The structure is 49 ft (15 m) long with a longest span of 33 ft (10.2 m) and a deck 69 ft wide.

Who owns Santa Rosa RD over Arroyo Santa Rosa?

It is owned by the County Highway Agency.