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LA0012 over Patterson Slough

Calcasieu Parish, Louisiana · rated Good in the 2025 National Bridge Inventory

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

LA0012 over Patterson Slough in Calcasieu 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 2013, making it 12 years old at the 2025 inventory.
It carries about 3,365 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 84 of the 462 inventoried bridges in Calcasieu Parish rated good (18.2%); 39 (8.4%) 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 319 ft
Location	3.98 Mi. West of La 109
NBI structure number	071000000070224
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I0010 over Sabine Relief	1954	86,969	Poor
I0010 over Gum Gully	1966	86,969	Fair
I0010 over Vinton Canal	1966	86,969	Fair
I0010 over Hamptons Coulee	1966	86,969	Fair
I0010 over Coone Gully	1965	86,969	Fair
I0010 over Drain	1966	86,969	Fair