Structure 23604504300706 · Orleans County, LA

I0510 over Railroad

Carries I0510 over Railroad, 0.10 Mi. South Of Us-90.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,143 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

1,143 ft end to end, longest span 79 ft: about 3.2 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.

Built199333 years old
Length1143.0 ft348.4 m
Daily traffic7,620counted 2021
Last inspectedNovember 2024every 24 months

Location

StateLouisiana
CountyOrleans
Location0.10 Mi. South Of Us-90
CarriesI0510
CrossesRailroad
Coordinates30.02543, -89.94280

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1143.0 ft (348.4 m)
Max Span79.1 ft (24.1 m)
Deck Width29.9 ft (9.1 m)
Deck Area3170.4 sq m
Main Spans17
Year Built1993

Traffic

Avg Daily Traffic7,620 (2021)
Truck Traffic25%
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number023604504300706

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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