Structure 23600463101201 · Orleans County, LA

La0039 over N O P B Rr (robertson ST

Carries La0039 over N O P B Rr (robertson ST, .6 Mi East Of La 3021.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,327 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

1,327 ft end to end, longest span 84 ft: about 3.7 football fields. Lengths and the semi-truck 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 multi-beam bridge.

Built196264 years old
Length1327.1 ft404.5 m
Daily traffic47,739counted 2021
Last inspectedFebruary 2023every 24 months

Location

StateLouisiana
CountyOrleans
Location.6 Mi East Of La 3021
CarriesLa0039
CrossesN O P B Rr (robertson ST
Coordinates29.97266, -90.04780

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1327.1 ft (404.5 m)
Max Span84.0 ft (25.6 m)
Deck Width36.7 ft (11.2 m)
Deck Area4530.4 sq m
Main Spans19
Year Built1962

Traffic

Avg Daily Traffic47,739 (2021)
Truck Traffic10%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number023600463101201

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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