Structure 84301130101381 · Sabine County, LA

La1217 over Harpoon Bayou

Carries La1217 over Harpoon Bayou, 1.38 Mi. North Of La 6.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

100 ft end to end, longest span 20 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
Length100.1 ft30.5 m
Daily traffic1,645counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateLouisiana
CountySabine
Location1.38 Mi. North Of La 6
CarriesLa1217
CrossesHarpoon Bayou
Coordinates31.59364, -93.47340

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length100.1 ft (30.5 m)
Max Span20.0 ft (6.1 m)
Deck Width42.7 ft (13 m)
Deck Area396.5 sq m
Main Spans5
Year Built1998

Traffic

Avg Daily Traffic1,645 (2021)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number084301130101381

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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