US Bridges

LA0147 over Drain

Fair

Bienville Parish, Louisiana · 1.97 MI West of LA 815 · Structure no. 040700430400951

Built
1980
45 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
38 ft
2 main spans
Daily traffic
1,988
2021 count
Owner
State
State Highway Agency

About this bridge

LA0147 over Drain is a concrete slab carrying LA0147 over Drain in Bienville Parish, Louisiana. It was built in 1980, so it is 45 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,988 vehicles a day, roughly 19% of them trucks, projected to reach 2,186 by 2041. The structure is 38 ft (11.6 m) long and 35 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesLA0147
CrossesDrain
Location1.97 MI West of LA 815
RouteState Highway 147
Coordinates32.51932, -92.8903
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,988 (2021)
Projected traffic2,186 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 LA0147 over Drain built?

It was built in 1980, making it 45 years old in 2025.

What condition is LA0147 over Drain in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does LA0147 over Drain carry?

About 1,988 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0147 over Drain?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns LA0147 over Drain?

It is owned by the State Highway Agency.