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US0090 over La 83 S.p. RR

St. Mary Parish, Louisiana · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

US0090 over La 83 S.p. RR in St. Mary Parish, Louisiana, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1978, making it 47 years old at the 2025 inventory.
It carries about 10,070 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 36 of the 124 inventoried bridges in St. Mary Parish rated good (29.0%); 9 (7.3%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 1,543 ft
Location	3.2 Mi NW of La 3211
NBI structure number	035104240507412
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Louisiana department of transportation.

Bridge	Built	Vehicles/day	Condition
US0090 over Ramp I	1984	24,384	Good
US0090 over Ramp M	1984	24,384	Good
US0090 over Patterson Canal	1964	22,893	Good
US0090 over Charenton Canal	1978	21,000	Fair
US0090 over Drain	1973	18,127	Fair
US0090 over Barrow Canal	1964	17,736	Fair