US Bridges

Oak Street over BNSF RY & AMTRAK

Fair

Kern County, California · 0.1 MI N/O California Ave · Structure no. 50C0065

Built
1939
86 years old, rebuilt 1989
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,001 ft
20 main spans
Daily traffic
24,433
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

Oak Street over BNSF RY & AMTRAK is a steel continuous stringer/multi-beam or girder carrying Oak Street over BNSF RY & AMTRAK in Kern County, California. It was built in 1939 and reconstructed in 1989, so it is 86 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 24,433 vehicles a day, roughly 10% of them trucks, projected to reach 38,821 by 2045. The structure is 1,001 ft (305.1 m) long and 98 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesOak Street
CrossesBNSF RY & AMTRAK
Location0.1 MI N/O California Ave
RouteCity Street 0
CountyKern County
StateCalifornia
Coordinates35.36948, -119.03856
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating26.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans20
Design loadHS 15
Structure length1,001 ft (305.1 m)
Longest span88 ft (26.8 m)
Deck width98 ft (29.9 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,433 (2010)
Projected traffic38,821 by 2045
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Oak Street over BNSF RY & AMTRAK built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1989.

What condition is Oak Street over BNSF RY & AMTRAK 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 Oak Street over BNSF RY & AMTRAK carry?

About 24,433 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Oak Street over BNSF RY & AMTRAK?

The structure is 1,001 ft (305.1 m) long with a longest span of 88 ft (26.8 m) and a deck 98 ft wide.

Who owns Oak Street over BNSF RY & AMTRAK?

It is owned by the City or Municipal Highway Agency.