Structure 71000000070205 · Calcasieu County, LA

La0384 over Black Bayou Canal

Carries La0384 over Black Bayou Canal, 8.2 Mi NW Of La 385.

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 FT115 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 115 ft across with 10 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.

Built200620 years old
Length115.2 ft35.1 m
Daily traffic988counted 2021
Last inspectedNovember 2024every 24 months

Location

StateLouisiana
CountyCalcasieu
Location8.2 Mi NW Of La 385
CarriesLa0384
CrossesBlack Bayou Canal
Coordinates30.07714, -93.28665

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length115.2 ft (35.1 m)
Max Span9.8 ft (3 m)
Deck Width46.9 ft (14.3 m)
Deck Area501.9 sq m
Main Spans10
Year Built2006

Traffic

Avg Daily Traffic988 (2021)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number071000000070205

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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