Structure 610330139905301 · Ascension County, LA

E Lanoux RD over New River Canal

Carries E Lanoux RD over New River Canal, 0.2 M N Of La 429.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating1/9 · Imminent Failure
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT58 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 1/9 · sets the rating

58 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.

Built199432 years old
Length58.1 ft17.7 m
Daily traffic25counted 2019
Last inspectedFebruary 2024every 12 months

Location

StateLouisiana
CountyAscension
Location0.2 M N Of La 429
CarriesE Lanoux RD
CrossesNew River Canal
Coordinates30.23252, -90.88335

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length58.1 ft (17.7 m)
Max Span19.0 ft (5.8 m)
Deck Width26.9 ft (8.2 m)
Deck Area145.1 sq m
Main Spans3
Year Built1994

Traffic

Avg Daily Traffic25 (2019)
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number610330139905301

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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