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LA0074 over Narcisse Bayou

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

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

LA0074 over Narcisse Bayou in Ascension Parish, Louisiana, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
It was built in 2022, making it 3 years old at the 2025 inventory.
It carries about 10,765 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 90 of the 216 inventoried bridges in Ascension Parish rated good (41.7%); 26 (12.0%) are rated poor.
Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
Its condition class and component ratings are unchanged from the 2024 inventory.
Its most recent inspection on record is dated April 2023, on a 24-month routine inspection cycle.
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

Component	Rating (2024)	Rating (2025)	FHWA scale meaning
Culvert	7	7	Good condition


Structure	Concrete culvert
Length	about 21 ft
Location	0.1 Mi E of US 61
NBI structure number	610300000610019
Condition class	Good
Traffic status (item 41)	Open, no restriction
Last inspection (item 90)	April 2023
Inspection interval (item 91)	24 months
Scour (item 113)	8: foundations stable, scour above the top of the footing

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

Bridge	Built	Vehicles/day	Condition
I0010 over Drain	1975	60,802	Fair
I0010 over La 73	1975	60,802	Fair
I0010 over Drain	1975	60,802	Good
I0010 over Drain	1975	60,802	Good
I0010 over LA429/Cornerview Rd	1975	60,802	Fair
I0010 over Drain	1975	60,802	Good