Structure 22900650102201 · Lafourche County, LA

La0024 over Bayou Blue

Carries La0024 over Bayou Blue, 2.2 Mi West Of La 1.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT325 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

325 ft end to end, longest span 25 ft: about 5 semi-trucks nose to tail. 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 slab bridge.

Built197947 years old
Length325.1 ft99.1 m
Daily traffic5,271counted 2021
Last inspectedJuly 2024every 24 months

Location

StateLouisiana
CountyLafourche
Location2.2 Mi West Of La 1
CarriesLa0024
CrossesBayou Blue
Coordinates29.54376, -90.40350

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length325.1 ft (99.1 m)
Max Span24.9 ft (7.6 m)
Deck Width42.7 ft (13 m)
Deck Area1288.3 sq m
Main Spans13
Year Built1979

Traffic

Avg Daily Traffic5,271 (2021)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number022900650102201

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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