Structure 44132047932321 · Red River County, LA

Dupree RD over Coushatta Bayou Trib.

Carries Dupree RD over Coushatta Bayou Trib., 0.6 Mi. West Of US 71.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
22 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 22 ft across with 3 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built198640 years old
Length22.0 ft6.7 m
Daily traffic32counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateLouisiana
CountyRed River
Location0.6 Mi. West Of US 71
CarriesDupree RD
CrossesCoushatta Bayou Trib.
Coordinates32.07892, -93.38625

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length22.0 ft (6.7 m)
Max Span5.9 ft (1.8 m)
Deck Width44.9 ft (13.7 m)
Deck Area91.8 sq m
Main Spans3
Year Built1986

Traffic

Avg Daily Traffic32 (2020)
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number044132047932321

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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