Structure 32300000030410 · Iberia County, LA

La0083 over Patout Bayou

Carries La0083 over Patout Bayou, 4.2 Mi N. Of La 319.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,286 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,286 ft end to end, longest span 186 ft: about 3.6 football fields. 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).

Built201214 years old
Length1286.1 ft392 m
Daily traffic5,447counted 2020
Last inspectedDecember 2024every 24 months

Location

StateLouisiana
CountyIberia
Location4.2 Mi N. Of La 319
CarriesLa0083
CrossesPatout Bayou
Coordinates29.83223, -91.79106

Physical Characteristics

MaterialSteel
DesignMovable - Swing
Total Length1286.1 ft (392 m)
Max Span186.0 ft (56.7 m)
Deck Width34.8 ft (10.6 m)
Deck Area4155.2 sq m
Main Spans2
Year Built2012

Traffic

Avg Daily Traffic5,447 (2020)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number032300000030410

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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