Structure 22629541900841 · Jefferson County, LA

6th ST over Keyhole Canal

Carries 6th ST over Keyhole Canal, 260 East Of Avenue H.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 1 of 9.

How ratings work
Decksets the rating1/9 · Imminent Failure
Superstructuresets the rating1/9 · Imminent Failure
Substructuresets the rating1/9 · Imminent Failure
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 1/9Superstructure 1/9Substructure 1/9

57 ft end to end, longest span 19 ft. Lengths and the car 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.

Built196066 years old
Length57.1 ft17.4 m
Daily traffic200counted 1979
Last inspectedJanuary 2024every 12 months

Location

StateLouisiana
CountyJefferson
Location260 East Of Avenue H
Carries6th ST
CrossesKeyhole Canal
Coordinates29.90258, -90.14045

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length57.1 ft (17.4 m)
Max Span19.0 ft (5.8 m)
Deck Width36.4 ft (11.1 m)
Deck Area193.1 sq m
Main Spans3
Year Built1960

Traffic

Avg Daily Traffic200 (1979)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number022629541900841

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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