Structure 80503700104121 · Avoyelles County, LA

La0454 over Wiggins Bayou

Carries La0454 over Wiggins Bayou, 4.12 Miles SW Of La 115.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 0 of 9.

How ratings work
Deck4/9 · Poor
Superstructure4/9 · Poor
Substructuresets the rating0/9 · Failed
Channelnot part of overall0/9 · Failed
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT182 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 0/9 · sets the rating

182 ft end to end, longest span 60 ft: about 3 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 multi-beam bridge.

Built195868 years old
Length182.1 ft55.5 m
Daily traffic226counted 2021
Last inspectedJune 2024every 12 months

Location

StateLouisiana
CountyAvoyelles
Location4.12 Miles SW Of La 115
CarriesLa0454
CrossesWiggins Bayou
Coordinates31.17178, -92.19560

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length182.1 ft (55.5 m)
Max Span60.0 ft (18.3 m)
Deck Width29.2 ft (8.9 m)
Deck Area493.9 sq m
Main Spans3
Year Built1958

Traffic

Avg Daily Traffic226 (2021)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical0 — Bridge closed
Structure Number080503700104121

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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