Structure 23604504300581 · Orleans County, LA

I0510 over Rr/us 90(chef Hwy)

Carries I0510 over Rr/us 90(chef Hwy), .2 Mi South Of US 90.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,618 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

2,618 ft end to end, longest span 93 ft: about 7.3 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.

Built199234 years old
Length2618.1 ft798 m
Daily traffic14,600counted 2016
Last inspectedFebruary 2023every 24 months

Location

StateLouisiana
CountyOrleans
Location.2 Mi South Of US 90
CarriesI0510
CrossesRr/us 90(chef Hwy)
Coordinates30.02202, -89.93925

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length2618.1 ft (798 m)
Max Span92.8 ft (28.3 m)
Deck Width55.1 ft (16.8 m)
Deck Area13406.4 sq m
Main Spans36
Year Built1992

Traffic

Avg Daily Traffic14,600 (2016)
Truck Traffic25%
Lanes On Bridge3
Lanes Under Bridge6

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 Number023604504300581

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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