Structure 25500050411091 · Terrebonne County, LA

La0182 over Drain Canal

Carries La0182 over Drain Canal, 11.09 Mi East Of La 20.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT64 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

64 ft end to end, longest span 30 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 tee-beam bridge.

Built193195 years old
Length64.0 ft19.5 m
Daily traffic3,687counted 2021
Last inspectedJuly 2024every 24 months

Location

StateLouisiana
CountyTerrebonne
Location11.09 Mi East Of La 20
CarriesLa0182
CrossesDrain Canal
Coordinates29.60773, -90.86060

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length64.0 ft (19.5 m)
Max Span29.9 ft (9.1 m)
Deck Width28.5 ft (8.7 m)
Deck Area169.7 sq m
Main Spans2
Year Built1931

Traffic

Avg Daily Traffic3,687 (2021)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number025500050411091

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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