Structure 22600000020538 · Jefferson County, LA

W. Esplanade over Duncan Canal

Carries W. Esplanade over Duncan Canal, 0.4 Mi W Of La 49.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT86 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 86 ft across with 2 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.

Built20206 years old
Length86.0 ft26.2 m
Daily traffic28,547counted 2018
Last inspectedMay 2023every 24 months

Location

StateLouisiana
CountyJefferson
Location0.4 Mi W Of La 49
CarriesW. Esplanade
CrossesDuncan Canal
Coordinates30.02013, -90.24685

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length86.0 ft (26.2 m)
Max Span38.1 ft (11.6 m)
Deck Width294.0 ft (89.6 m)
Deck Area2347.5 sq m
Main Spans2
Year Built2020

Traffic

Avg Daily Traffic28,547 (2018)
Lanes On Bridge4

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number022600000020538

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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