US Bridges

LA0138 over Coulss Bayou

Good

Morehouse Parish, Louisiana · 3.9 MI North of LA 3079 · Structure no. 053403300105401

Built
1993
32 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
1,830
2021 count
Owner
State
State Highway Agency

About this bridge

LA0138 over Coulss Bayou is a concrete slab carrying LA0138 over Coulss Bayou in Morehouse Parish, Louisiana. It was built in 1993, so it is 32 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 1,830 vehicles a day, roughly 15% of them trucks, projected to reach 2,013 by 2041. The structure is 100 ft (30.5 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLA0138
CrossesCoulss Bayou
Location3.9 MI North of LA 3079
RouteState Highway 138
Coordinates32.75488, -91.8123
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 protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating79 US tons
Inventory rating48 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 width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,830 (2021)
Projected traffic2,013 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 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 LA0138 over Coulss Bayou built?

It was built in 1993, making it 32 years old in 2025.

What condition is LA0138 over Coulss 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 December 2024.

How much traffic does LA0138 over Coulss Bayou carry?

About 1,830 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0138 over Coulss Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns LA0138 over Coulss Bayou?

It is owned by the State Highway Agency.