Structure 50 0359L · Kern County, CA

State Route 58 WB over SR 184 (weedpatch Hwy)

Carries State Route 58 WB over SR 184 (weedpatch Hwy), 06-ker-058-r59.43.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT133 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

133 ft end to end. 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
Length132.9 ft40.5 m
Daily traffic32,500counted 2009
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyKern
Location06-ker-058-r59.43
CarriesState Route 58 WB
CrossesSR 184 (weedpatch Hwy)
Coordinates35.35238, -118.91446

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length132.9 ft (40.5 m)
Max Span131.2 ft (40 m)
Deck Width70.9 ft (21.6 m)
Deck Area874.8 sq m
Main Spans1
Year Built1974

Traffic

Avg Daily Traffic32,500 (2009)
Truck Traffic25%
Lanes On Bridge4
Lanes Under Bridge4

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 0359L

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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