Structure 32830078920071 · Lafayette County, LA

Serenity Rd. over Coulee

Carries Serenity Rd. over Coulee, 0.3 Mi. West Of Bonin RD.

Overall conditionPoor

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

How ratings work
Deck4/9 · Poor
Superstructure4/9 · Poor
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 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 1/9 · sets the rating

30 ft end to end, longest span 15 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 multi-beam bridge.

Built197254 years old
Length29.9 ft9.1 m
Daily traffic40counted 2020
Last inspectedOctober 2024every 12 months

Location

StateLouisiana
CountyLafayette
Location0.3 Mi. West Of Bonin RD
CarriesSerenity Rd.
CrossesCoulee
Coordinates30.13091, -92.01229

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length29.9 ft (9.1 m)
Max Span15.1 ft (4.6 m)
Deck Width22.3 ft (6.8 m)
Deck Area61.9 sq m
Main Spans2
Year Built1972

Traffic

Avg Daily Traffic40 (2020)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number032830078920071

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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