US Bridges

LA0001 over Roseau Bayou

Good

Avoyelles Parish, Louisiana · 0.08 Mi. North of LA 114 · Structure no. 080500523000081

Built
1965
60 years old, rebuilt 2016
Condition
Good
inspected January 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
4,686
2021 count
Owner
State
State Highway Agency

About this bridge

LA0001 over Roseau Bayou is a concrete slab carrying LA0001 over Roseau Bayou in Avoyelles Parish, Louisiana. It was built in 1965 and reconstructed in 2016, so it is 60 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,686 vehicles a day, roughly 15% of them trucks, projected to reach 5,154 by 2041. The structure is 100 ft (30.5 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLA0001
CrossesRoseau Bayou
Location0.08 Mi. North of LA 114
RouteState Highway 1
Coordinates31.03155, -91.943
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,686 (2021)
Projected traffic5,154 by 2041
Trucks15%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0001 over Roseau Bayou built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2016.

What condition is LA0001 over Roseau Bayou in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does LA0001 over Roseau Bayou carry?

About 4,686 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0001 over Roseau Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 47 ft wide.

Who owns LA0001 over Roseau Bayou?

It is owned by the State Highway Agency.