Structure 46000850507651 · Webster County, LA

La0160 over Dorcheat Bayou Relief

Carries La0160 over Dorcheat Bayou Relief, 1.22 Mi West Of La 3008.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT115 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

115 ft end to end, longest span 19 ft. 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 or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built197749 years old
Length115.2 ft35.1 m
Daily traffic537counted 2021
Last inspectedSeptember 2023every 24 months

Location

StateLouisiana
CountyWebster
Location1.22 Mi West Of La 3008
CarriesLa0160
CrossesDorcheat Bayou Relief
Coordinates32.84868, -93.34920

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length115.2 ft (35.1 m)
Max Span19.0 ft (5.8 m)
Deck Width30.8 ft (9.4 m)
Deck Area329.9 sq m
Main Spans6
Year Built1977

Traffic

Avg Daily Traffic537 (2021)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number046000850507651

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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