Structure 25500000020265 · Terrebonne County, LA

Prospect BLVD over Drain Canal

Carries Prospect BLVD over Drain Canal, 0.6 Mi S Of La 24.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

27 ft end to end. 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.

Built199531 years old
Length26.9 ft8.2 m
Daily traffic10,390counted 2021
Last inspectedApril 2023every 24 months

Location

StateLouisiana
CountyTerrebonne
Location0.6 Mi S Of La 24
CarriesProspect BLVD
CrossesDrain Canal
Coordinates29.58379, -90.68324

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length26.9 ft (8.2 m)
Max Span26.9 ft (8.2 m)
Deck Width64.0 ft (19.5 m)
Deck Area159.9 sq m
Main Spans1
Year Built1995

Traffic

Avg Daily Traffic10,390 (2021)
Lanes On Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number025500000020265

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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