US Bridges

Roberts Lane over Beardsley Canal

Fair

Kern County, California · North of Olive Drive · Structure no. 50C0143

Built
1968
57 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
26 ft
3 main spans
Daily traffic
9,000
2007 count
Owner
County
County Highway Agency

About this bridge

Roberts Lane over Beardsley Canal is a concrete continuous culvert carrying Roberts Lane over Beardsley Canal in Kern County, California. It was built in 1968, so it is 57 years old, older 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 6 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 9,000 vehicles a day, roughly 5% of them trucks, projected to reach 15,572 by 2042. The structure is 26 ft (7.9 m) long and 94 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRoberts Lane
CrossesBeardsley Canal
LocationNorth of Olive Drive
RouteCounty Highway 0
CountyKern County
StateCalifornia
Coordinates35.41283, -119.04876
Functional classUrban Minor 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width94 ft (28.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,000 (2007)
Projected traffic15,572 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Roberts Lane over Beardsley Canal built?

It was built in 1968, making it 57 years old in 2025.

What condition is Roberts Lane over Beardsley Canal 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 December 2024.

How much traffic does Roberts Lane over Beardsley Canal carry?

About 9,000 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is Roberts Lane over Beardsley Canal?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 94 ft wide.

Who owns Roberts Lane over Beardsley Canal?

It is owned by the County Highway Agency.