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US0171 over I-10

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

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

US0171 over I-10 in Calcasieu Parish, Louisiana, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1963, making it 62 years old at the 2025 inventory.
It carries about 18,040 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 339 of the 462 inventoried bridges in Calcasieu Parish rated fair (73.4%); 39 (8.4%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous concrete tee beam
Length	about 374 ft
Location	0.3 Mi N of Hwy 3020
NBI structure number	071000240100782
Condition class	Fair

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