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Nation Rd. over Duralde Coulee

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

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

Nation Rd. over Duralde Coulee in Acadia Parish, Louisiana, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1970, making it 55 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 23 of the 280 inventoried bridges in Acadia Parish rated poor (8.2%); 23 (8.2%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Timber stringer or multi-beam girder
Length	about 32 ft
Location	0.6 Mi. S. of La 13
NBI structure number	030130152921551
Condition class	Poor

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