US Bridges

Stockdale HWY over Kern River

Fair

Kern County, California · 0.3 MI W Buena Vista RD · Structure no. 50C0012

Built
1990
35 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
560 ft
19 main spans
Daily traffic
46,000
2008 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stockdale HWY over Kern River is a concrete continuous slab carrying Stockdale HWY over Kern River in Kern County, California. It was built in 1990, so it is 35 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 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 46,000 vehicles a day, roughly 5% of them trucks, projected to reach 75,767 by 2045. The structure is 560 ft (170.7 m) long and 102 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesStockdale HWY
CrossesKern River
Location0.3 MI W Buena Vista RD
RouteCity Street 0
CountyKern County
StateCalifornia
Coordinates35.35105, -119.13116
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
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 typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans19
Design loadHS 20 + Mod
Structure length560 ft (170.7 m)
Longest span30 ft (9.1 m)
Deck width102 ft (31 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,000 (2008)
Projected traffic75,767 by 2045
Trucks5%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Stockdale HWY over Kern River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Stockdale HWY over Kern River 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 Stockdale HWY over Kern River carry?

About 46,000 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is Stockdale HWY over Kern River?

The structure is 560 ft (170.7 m) long with a longest span of 30 ft (9.1 m) and a deck 102 ft wide.

Who owns Stockdale HWY over Kern River?

It is owned by the City or Municipal Highway Agency.