Structure 50 0384R · Kern County, CA

State Route 58 EB over Tvrr

Carries State Route 58 EB over Tvrr, 06-ker-058-r58.92.

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 FT127 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

127 ft end to end, longest span 52 ft. 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.

Built1974rebuilt 2004
Length127.0 ft38.7 m
Daily traffic22,500counted 2019
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyKern
Location06-ker-058-r58.92
CarriesState Route 58 EB
CrossesTvrr
Coordinates35.35212, -118.92340

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length127.0 ft (38.7 m)
Max Span51.8 ft (15.8 m)
Deck Width59.4 ft (18.1 m)
Deck Area700.5 sq m
Main Spans3
Year Built1974 (reconstructed 2004)

Traffic

Avg Daily Traffic22,500 (2019)
Truck Traffic23%
Lanes On Bridge3

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 0384R

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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