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Nation Road over Coulee Duralde

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

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

Nation Road over Coulee Duralde in Acadia Parish, Louisiana, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 8 (very good condition) on the 0-9 scale.
It was built in 2019, making it 6 years old at the 2025 inventory.
It carries about 336 vehicles a day (traffic count year 2020).
Its listed owner is the county highway agency.
It is one of 118 of the 280 inventoried bridges in Acadia Parish rated good (42.1%); 23 (8.2%) 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 120 ft
Location	0.5 Mi S of LA 35
NBI structure number	030100000000154
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 Drain	1966	78,651	Fair
I0010 over LA0013	1966	66,003	Fair
I0010 over Drain	1966	66,003	Good
I0010 over Drain	1959	58,865	Fair
I0010 over Akdnrr & Frankel Farm Rd	1961	58,865	Fair
I0010 over Bayou Plaquemine	1961	58,865	Fair