Structure 22908291800001 · Lafourche County, LA

La0649 over Bayou Lafourche

Carries La0649 over Bayou Lafourche, .01 Mi North Of La 1.

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT167 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

167 ft end to end, longest span 132 ft: about 2 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 swing bridge (drawn closed).

Built199630 years old
Length167.0 ft50.9 m
Daily traffic1,991counted 2021
Last inspectedJune 2023every 24 months

Location

StateLouisiana
CountyLafourche
Location.01 Mi North Of La 1
CarriesLa0649
CrossesBayou Lafourche
Coordinates29.75402, -90.72813

Physical Characteristics

MaterialSteel
DesignMovable - Swing
Total Length167.0 ft (50.9 m)
Max Span131.9 ft (40.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area666.8 sq m
Main Spans4
Year Built1996

Traffic

Avg Daily Traffic1,991 (2021)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number022908291800001

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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