US Bridges

LA0154 over Black Lake Creek

Fair

Bienville Parish, Louisiana · .64 MI North of US 80 · Structure no. 040700880500641

Built
1971
54 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
1,489
2021 count
Owner
State
State Highway Agency

About this bridge

LA0154 over Black Lake Creek is a concrete slab carrying LA0154 over Black Lake Creek in Bienville Parish, Louisiana. It was built in 1971, so it is 54 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 1,489 vehicles a day, roughly 19% of them trucks, projected to reach 1,637 by 2041. The structure is 140 ft (42.7 m) long and 47 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesLA0154
CrossesBlack Lake Creek
Location.64 MI North of US 80
RouteState Highway 154
Coordinates32.55424, -93.0537
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,489 (2021)
Projected traffic1,637 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 LA0154 over Black Lake Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is LA0154 over Black Lake Creek 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 April 2024.

How much traffic does LA0154 over Black Lake Creek carry?

About 1,489 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0154 over Black Lake Creek?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 47 ft wide.

Who owns LA0154 over Black Lake Creek?

It is owned by the State Highway Agency.