Structure 24400000000014 · St. Bernard County, LA

Oak Ridge BLVD over 20 Arpent Canal

Carries Oak Ridge BLVD over 20 Arpent Canal, 0.05 Mi E Of La 39.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

57 ft end to end, longest span 19 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.

Built198640 years old
Length57.1 ft17.4 m
Daily traffic450counted 2022
Last inspectedMarch 2023every 24 months

Location

StateLouisiana
CountySt. Bernard
Location0.05 Mi E Of La 39
CarriesOak Ridge BLVD
Crosses20 Arpent Canal
Coordinates29.90730, -89.89378

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length57.1 ft (17.4 m)
Max Span19.0 ft (5.8 m)
Deck Width31.2 ft (9.5 m)
Deck Area165.3 sq m
Main Spans3
Year Built1986

Traffic

Avg Daily Traffic450 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number024400000000014

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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