US Bridges

State Route 150 over Happy Valley Drain

Fair

Ventura County, California · 07-VEN-150-R13.84 · Structure no. 52 0345

Built
1972
53 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
5,500
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 150 over Happy Valley Drain is a concrete slab carrying State Route 150 over Happy Valley Drain in Ventura County, California. It was built in 1972, 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,500 vehicles a day, roughly 9% of them trucks, projected to reach 7,000 by 2041. The structure is 28 ft (8.4 m) long and 126 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 150
CrossesHappy Valley Drain
Location07-VEN-150-R13.84
RouteState Highway 150
Coordinates34.42648, -119.2964
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.3 US tons
Inventory rating29.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span26 ft (7.9 m)
Deck width126 ft (38.4 m)
Roadway width75 ft (22.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2020)
Projected traffic7,000 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 150 over Happy Valley Drain built?

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

What condition is State Route 150 over Happy Valley Drain in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does State Route 150 over Happy Valley Drain carry?

About 5,500 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is State Route 150 over Happy Valley Drain?

The structure is 28 ft (8.4 m) long with a longest span of 26 ft (7.9 m) and a deck 126 ft wide.

Who owns State Route 150 over Happy Valley Drain?

It is owned by the State Highway Agency.