US Bridges

State Route 34 over Revolon Slough

Good

Ventura County, California · 07-VEN-034-8.15 · Structure no. 52 0410

Built
1979
46 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete Continuous
Length
52 ft
2 main spans
Daily traffic
8,000
2021 count
Owner
State
State Highway Agency

About this bridge

State Route 34 over Revolon Slough is a concrete continuous culvert carrying State Route 34 over Revolon Slough in Ventura County, California. It was built in 1979, so it is 46 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 8,000 vehicles a day, roughly 4% of them trucks, projected to reach 12,987 by 2041. The structure is 52 ft (16 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 34
CrossesRevolon Slough
Location07-VEN-034-8.15
RouteState Highway 34
Coordinates34.19661, -119.10981
Functional classRural Minor Arterial

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.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal 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
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length52 ft (16 m)
Longest span25 ft (7.6 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2021)
Projected traffic12,987 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 34 over Revolon Slough built?

It was built in 1979, making it 46 years old in 2025.

What condition is State Route 34 over Revolon Slough 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 October 2023.

How much traffic does State Route 34 over Revolon Slough carry?

About 8,000 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is State Route 34 over Revolon Slough?

The structure is 52 ft (16 m) long with a longest span of 25 ft (7.6 m) and a deck 42 ft wide.

Who owns State Route 34 over Revolon Slough?

It is owned by the State Highway Agency.