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LA0001 over Sibley Lake

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

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

LA0001 over Sibley Lake in Natchitoches 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 1969, making it 56 years old at the 2025 inventory.
It carries about 14,586 vehicles a day (traffic count year 2021).
Its listed owner is the state highway agency.
It is one of 145 of the 320 inventoried bridges in Natchitoches Parish rated fair (45.3%); 46 (14.4%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 662 ft
Location	.70 Mi N of Jct La 6
NBI structure number	083500343004781
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I0049 over La 490	1985	28,142	Good
I0049 over Bayou Barbue	1984	28,142	Fair
I0049 over Barbue Bayou Trib.	1984	28,142	Fair
I0049 over Emmanuel Road	1985	28,142	Fair
I0049 over Comitte Bayou	1984	28,142	Fair
I0049 over LA119	1985	28,142	Fair