Structure 35104240535377 · St. Mary County, LA

Us0090 over Ramp L

Carries Us0090 over Ramp L, 0.9 Mi E Of La 182.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT536 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

536 ft end to end, longest span 93 ft: about 7 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 multi-beam bridge.

Built198442 years old
Length536.1 ft163.4 m
Daily traffic12,192counted 2021
Last inspectedMarch 2024every 24 months

Location

StateLouisiana
CountySt. Mary
Location0.9 Mi E Of La 182
CarriesUs0090
CrossesRamp L
Coordinates29.70032, -91.18491

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length536.1 ft (163.4 m)
Max Span92.8 ft (28.3 m)
Deck Width33.1 ft (10.1 m)
Deck Area1650.3 sq m
Main Spans7
Year Built1984

Traffic

Avg Daily Traffic12,192 (2021)
Truck Traffic14%
Lanes On Bridge1

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number035104240535377

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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