Structure 612404500700141 · Iberville County, LA

I0010 over Whiskey Bay Channel

Carries I0010 over Whiskey Bay Channel, I0010.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,707 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

2,707 ft end to end, longest span 425 ft: about 7.5 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 girder bridge.

Built197254 years old
Length2707.0 ft825.1 m
Daily traffic42,449counted 2021
Last inspectedAugust 2023every 24 months

Location

StateLouisiana
CountyIberville
LocationI0010
CarriesI0010
CrossesWhiskey Bay Channel
Coordinates30.36412, -91.64242

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length2707.0 ft (825.1 m)
Max Span424.9 ft (129.5 m)
Deck Width65.3 ft (19.9 m)
Deck Area16419.5 sq m
Main Spans9
Year Built1972

Traffic

Avg Daily Traffic42,449 (2021)
Truck Traffic28%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number612404500700141

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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