Structure 50 0248 · Kern County, CA

White Lane over State Route 99

Carries White Lane over State Route 99, 06-ker-099-21.08-bkd.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT291 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 5/9 · sets the rating

291 ft end to end, longest span 96 ft: about 4 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.

Built1962rebuilt 2003
Length291.0 ft88.7 m
Daily traffic6,000counted 2018
Last inspectedOctober 2023every 24 months

Location

StateCalifornia
CountyKern
Location06-ker-099-21.08-bkd
CarriesWhite Lane
CrossesState Route 99
Coordinates35.31751, -119.03662

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length291.0 ft (88.7 m)
Max Span96.1 ft (29.3 m)
Deck Width110.2 ft (33.6 m)
Deck Area2980.3 sq m
Main Spans4
Year Built1962 (reconstructed 2003)

Traffic

Avg Daily Traffic6,000 (2018)
Truck Traffic2%
Lanes On Bridge7
Lanes Under Bridge10

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number50 0248

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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