Structure 84300250405481 · Sabine County, LA

Us0171 over Bayou Estes

Carries Us0171 over Bayou Estes, 5.48 Mi. North Of La 483.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 29 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built199036 years old
Length28.9 ft8.8 m
Daily traffic4,249counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateLouisiana
CountySabine
Location5.48 Mi. North Of La 483
CarriesUs0171
CrossesBayou Estes
Coordinates31.75872, -93.70220

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length28.9 ft (8.8 m)
Max Span8.9 ft (2.7 m)
Deck Width176.8 ft (53.9 m)
Deck Area474.3 sq m
Main Spans3
Year Built1990

Traffic

Avg Daily Traffic4,249 (2021)
Truck Traffic15%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number084300250405481

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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