US Bridges

River Road over Kern River Park

Fair

Kern County, California · East of Harbor Road · Structure no. 50C0261

Built
1934
91 years old
Condition
Fair
inspected December 2024
Type
Arch - Deck
Concrete
Length
32 ft
1 main span
Daily traffic
450
2016 count
Owner
County
County Highway Agency

About this bridge

River Road over Kern River Park is a concrete arch - deck carrying River Road over Kern River Park in Kern County, California. It was built in 1934, so it is 91 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 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 450 vehicles a day, roughly 2% of them trucks, projected to reach 642 by 2042. The structure is 32 ft (9.8 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRiver Road
CrossesKern River Park
LocationEast of Harbor Road
RouteCounty Highway 0
Coordinates35.44753, -118.91827
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionDecember 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating31.1 US tons
Inventory rating18.5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width44 ft (13.5 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2016)
Projected traffic642 by 2042
Trucks2%
Lanes on structure2
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 River Road over Kern River Park built?

It was built in 1934, making it 91 years old in 2025.

What condition is River Road over Kern River Park 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 River Road over Kern River Park carry?

About 450 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is River Road over Kern River Park?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 44 ft wide.

Who owns River Road over Kern River Park?

It is owned by the County Highway Agency.