Structure 23604509009532 · Orleans County, LA

I0010 over Inner Harbor Nav Canal

Carries I0010 over Inner Harbor Nav Canal, 0.6 Mi SW Of US 90.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,390 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

1,390 ft end to end, longest span 110 ft: about 3.9 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.

Built196660 years old
Length1390.1 ft423.7 m
Daily traffic1,600counted 2021
Last inspectedAugust 2023every 24 months

Location

StateLouisiana
CountyOrleans
Location0.6 Mi SW Of US 90
CarriesI0010
CrossesInner Harbor Nav Canal
Coordinates30.00706, -90.01690

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1390.1 ft (423.7 m)
Max Span109.9 ft (33.5 m)
Deck Width96.1 ft (29.3 m)
Deck Area12414.4 sq m
Main Spans5
Year Built1966

Traffic

Avg Daily Traffic1,600 (2021)
Truck Traffic25%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number023604509009532

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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