Structure 50 0391 · Kern County, CA

Washington Street over SR 58

Carries Washington Street over SR 58, 06-ker-058-r55.92-bkd.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT226 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

226 ft end to end, longest span 115 ft: about 3 semi-trucks nose to tail. 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 box-beam bridge.

Built197452 years old
Length226.0 ft68.9 m
Daily traffic2,613counted 2012
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyKern
Location06-ker-058-r55.92-bkd
CarriesWashington Street
CrossesSR 58
Coordinates35.35272, -118.97652

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length226.0 ft (68.9 m)
Max Span115.2 ft (35.1 m)
Deck Width41.0 ft (12.5 m)
Deck Area861.2 sq m
Main Spans2
Year Built1974

Traffic

Avg Daily Traffic2,613 (2012)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number50 0391

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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