Structure 612430082911201 · Iberville County, LA

Ridge RD over Bayou Danials

Carries Ridge RD over Bayou Danials, 4 Mi. SW Of White Castle.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

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.

Built199828 years old
Length57.1 ft17.4 m
Daily traffic120counted 2019
Last inspectedDecember 2024every 24 months

Location

StateLouisiana
CountyIberville
Location4 Mi. SW Of White Castle
CarriesRidge RD
CrossesBayou Danials
Coordinates30.13526, -91.20074

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length57.1 ft (17.4 m)
Max Span19.0 ft (5.8 m)
Deck Width32.2 ft (9.8 m)
Deck Area170.5 sq m
Main Spans3
Year Built1998

Traffic

Avg Daily Traffic120 (2019)
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number612430082911201

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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