Structure 52500430101431 · Jackson County, LA

La0147 over Dudgemona Relief

Carries La0147 over Dudgemona Relief, 1.43 Mi West Of US 167.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT453 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

453 ft end to end, longest span 38 ft: 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 slab bridge.

Built200323 years old
Length453.1 ft138.1 m
Daily traffic3,480counted 2021
Last inspectedApril 2024every 24 months

Location

StateLouisiana
CountyJackson
Location1.43 Mi West Of US 167
CarriesLa0147
CrossesDudgemona Relief
Coordinates32.28476, -92.74540

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length453.1 ft (138.1 m)
Max Span38.1 ft (11.6 m)
Deck Width45.9 ft (14 m)
Deck Area1933.4 sq m
Main Spans12
Year Built2003

Traffic

Avg Daily Traffic3,480 (2021)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number052500430101431

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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