Structure 22900640601401 · Lafourche County, LA

La0001 over Co Canal Lockport

Carries La0001 over Co Canal Lockport, .1 Mi North Of La 655.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 3 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating3/9 · Serious
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT410 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 3/9 · sets the ratingSubstructure 6/9

410 ft end to end: about 6 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 lift bridge (drawn closed).

Built195967 years old
Length410.1 ft125 m
Daily traffic9,831counted 2021
Last inspectedJune 2024every 12 months

Location

StateLouisiana
CountyLafourche
Location.1 Mi North Of La 655
CarriesLa0001
CrossesCo Canal Lockport
Coordinates29.64445, -90.54436

Physical Characteristics

MaterialSteel
DesignMovable - Lift
Total Length410.1 ft (125 m)
Max Span160.1 ft (48.8 m)
Deck Width38.7 ft (11.8 m)
Deck Area1,475 sq m
Main Spans1
Year Built1959

Traffic

Avg Daily Traffic9,831 (2021)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number022900640601401

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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