Structure 50C0065 · Kern County, CA

Oak Street over Bnsf Ry & Amtrak

Carries Oak Street over Bnsf Ry & Amtrak, 0.1 Mi N/o California AVE.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,001 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,001 ft end to end, longest span 88 ft: about 2.8 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1939rebuilt 1989
Length1001.0 ft305.1 m
Daily traffic24,433counted 2010
Last inspectedOctober 2023every 24 months

Location

StateCalifornia
CountyKern
Location0.1 Mi N/o California AVE
CarriesOak Street
CrossesBnsf Ry & Amtrak
Coordinates35.36948, -119.03856

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1001.0 ft (305.1 m)
Max Span87.9 ft (26.8 m)
Deck Width98.1 ft (29.9 m)
Deck Area9122.5 sq m
Main Spans20
Year Built1939 (reconstructed 1989)

Traffic

Avg Daily Traffic24,433 (2010)
Truck Traffic10%
Lanes On Bridge6

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number50C0065

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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