US Bridges

LA0557 over Bayou Lapine

Fair

Ouachita Parish, Louisiana · 1.09 MI South of LA 34 · Structure no. 053701590310121

Built
2002
23 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
3,528
2021 count
Owner
State
State Highway Agency

About this bridge

LA0557 over Bayou Lapine is a concrete slab carrying LA0557 over Bayou Lapine in Ouachita Parish, Louisiana. It was built in 2002, so it is 23 years old, younger 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 3,528 vehicles a day, roughly 15% of them trucks, projected to reach 3,880 by 2041. The structure is 120 ft (36.6 m) long and 42 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA0557
CrossesBayou Lapine
Location1.09 MI South of LA 34
RouteState Highway 557
CountyOuachita Parish
StateLouisiana
Coordinates32.39958, -92.2015
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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating52.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,528 (2021)
Projected traffic3,880 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA0557 over Bayou Lapine built?

It was built in 2002, making it 23 years old in 2025.

What condition is LA0557 over Bayou Lapine 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 October 2024.

How much traffic does LA0557 over Bayou Lapine carry?

About 3,528 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0557 over Bayou Lapine?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 42 ft wide.

Who owns LA0557 over Bayou Lapine?

It is owned by the State Highway Agency.