Structure 50C0391 · Kern County, CA

Bena Road over Walker Basin Creek

Carries Bena Road over Walker Basin Creek, 2.0 Mi East Neumarkel RD.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT33 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 33 ft across with 3 openings. Lengths and the car 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, so those are drawn as typical for a culvert.

Built201313 years old
Length32.8 ft10 m
Daily traffic350counted 2007
Last inspectedNovember 2023every 24 months

Location

StateCalifornia
CountyKern
Location2.0 Mi East Neumarkel RD
CarriesBena Road
CrossesWalker Basin Creek
Coordinates35.32899, -118.75674

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length32.8 ft (10 m)
Max Span10.8 ft (3.3 m)
Deck Width42.0 ft (12.8 m)
Deck Area128 sq m
Main Spans3
Year Built2013

Traffic

Avg Daily Traffic350 (2007)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number50C0391

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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