Structure 35104240536941 · St. Mary County, LA

Us0090 over Bayou Ramos

Carries Us0090 over Bayou Ramos, 3.19 Mi E Of La 182.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
8,349 FT OVERALL1,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 6/9

8,349 ft end to end, longest span 119 ft: about 23 football fields, or 1.6 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built199432 years old
Length8349.1 ft2544.8 m
Daily traffic7,885counted 2021
Last inspectedDecember 2023every 24 months

Location

StateLouisiana
CountySt. Mary
Location3.19 Mi E Of La 182
CarriesUs0090
CrossesBayou Ramos
Coordinates29.69316, -91.15050

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length8349.1 ft (2544.8 m)
Max Span119.1 ft (36.3 m)
Deck Width43.0 ft (13.1 m)
Deck Area33336.9 sq m
Main Spans107
Year Built1994

Traffic

Avg Daily Traffic7,885 (2021)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number035104240536941

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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