US Bridges

Moorpark Road over Arroyo Santa Rosa

Good

Ventura County, California · .84 MI S Tierra Rejada RD · Structure no. 52C0280

Built
2003
22 years old
Condition
Good
inspected August 2024
Type
Culvert
Steel
Length
126 ft
9 main spans
Daily traffic
14,200
2022 count
Owner
County
County Highway Agency

About this bridge

Moorpark Road over Arroyo Santa Rosa is a steel culvert carrying Moorpark Road over Arroyo Santa Rosa in Ventura County, California. It was built in 2003, so it is 22 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,200 vehicles a day, roughly 1% of them trucks, projected to reach 18,797 by 2046. The structure is 126 ft (38.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMoorpark Road
CrossesArroyo Santa Rosa
Location.84 MI S Tierra Rejada RD
RouteCounty Highway 0
CountyVentura County
StateCalifornia
Coordinates34.2525, -118.86369
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans9
Design loadUnknown
Structure length126 ft (38.5 m)
Longest span34 ft (10.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,200 (2022)
Projected traffic18,797 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Moorpark Road over Arroyo Santa Rosa built?

It was built in 2003, making it 22 years old in 2025.

What condition is Moorpark Road 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 August 2024.

How much traffic does Moorpark Road over Arroyo Santa Rosa carry?

About 14,200 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Moorpark Road over Arroyo Santa Rosa?

The structure is 126 ft (38.5 m) long with a longest span of 34 ft (10.4 m).

Who owns Moorpark Road over Arroyo Santa Rosa?

It is owned by the County Highway Agency.