Structure 24400000000105 · St. Bernard County, LA

Lena DR over 20 Arpent Canal

Carries Lena DR over 20 Arpent Canal, 0.51 Mi N Of La 39.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck9/9 · Excellent
Superstructure9/9 · Excellent
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT49 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 7/9 · sets the rating

49 ft end to end, longest span 25 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 slab bridge.

Built201511 years old
Length48.9 ft14.9 m
Daily traffic218counted 2024
Last inspectedFebruary 2023every 24 months

Location

StateLouisiana
CountySt. Bernard
Location0.51 Mi N Of La 39
CarriesLena DR
Crosses20 Arpent Canal
Coordinates29.94444, -89.94099

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length48.9 ft (14.9 m)
Max Span24.9 ft (7.6 m)
Deck Width35.4 ft (10.8 m)
Deck Area160.9 sq m
Main Spans3
Year Built2015

Traffic

Avg Daily Traffic218 (2024)
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number024400000000105

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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