US Bridges

LA0155 over Saline Bayou

Good

Bienville Parish, Louisiana · 1.85 MI East of LA 9 · Structure no. 040703070201851

Built
1982
43 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete
Length
500 ft
25 main spans
Daily traffic
1,022
2021 count
Owner
State
State Highway Agency

About this bridge

LA0155 over Saline Bayou is a concrete slab carrying LA0155 over Saline Bayou in Bienville Parish, Louisiana. It was built in 1982, so it is 43 years old, younger 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 1,022 vehicles a day, roughly 19% of them trucks, projected to reach 1,124 by 2041. The structure is 500 ft (152.4 m) long and 43 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesLA0155
CrossesSaline Bayou
Location1.85 MI East of LA 9
RouteState Highway 155
Coordinates32.17424, -92.9465
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans25
Design loadHS 20
Structure length500 ft (152.4 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,022 (2021)
Projected traffic1,124 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 LA0155 over Saline Bayou built?

It was built in 1982, making it 43 years old in 2025.

What condition is LA0155 over Saline 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 May 2023.

How much traffic does LA0155 over Saline Bayou carry?

About 1,022 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0155 over Saline Bayou?

The structure is 500 ft (152.4 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns LA0155 over Saline Bayou?

It is owned by the State Highway Agency.