Structure 44103020101061 · Red River County, LA

La0515 over Coushatta Bayou

Carries La0515 over Coushatta Bayou, 1.06 Mi North Of US 71.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck4/9 · Poor
Superstructure4/9 · Poor
Substructuresets the rating3/9 · Serious
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT286 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 3/9 · sets the rating

286 ft end to end, longest span 19 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 slab bridge.

Built197551 years old
Length286.1 ft87.2 m
Daily traffic338counted 2021
Last inspectedFebruary 2024every 12 months

Location

StateLouisiana
CountyRed River
Location1.06 Mi North Of US 71
CarriesLa0515
CrossesCoushatta Bayou
Coordinates32.11867, -93.40270

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length286.1 ft (87.2 m)
Max Span19.0 ft (5.8 m)
Deck Width30.8 ft (9.4 m)
Deck Area819.7 sq m
Main Spans15
Year Built1975

Traffic

Avg Daily Traffic338 (2021)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number044103020101061

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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