Structure 35104083100091 · St. Mary County, LA

La0322 over Bayou Teche

Carries La0322 over Bayou Teche, 0.09 Mi West Of La 87.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT402 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

402 ft end to end, longest span 165 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 swing bridge (drawn closed).

Built197155 years old
Length401.9 ft122.5 m
Daily traffic1,004counted 2021
Last inspectedMay 2024every 24 months

Location

StateLouisiana
CountySt. Mary
Location0.09 Mi West Of La 87
CarriesLa0322
CrossesBayou Teche
Coordinates29.80290, -91.49030

Physical Characteristics

MaterialSteel
DesignMovable - Swing
Total Length401.9 ft (122.5 m)
Max Span165.0 ft (50.3 m)
Deck Width33.8 ft (10.3 m)
Deck Area1261.8 sq m
Main Spans2
Year Built1971

Traffic

Avg Daily Traffic1,004 (2021)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number035104083100091

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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