US Bridges

LA0177 over Little Wallace Bayou

Fair

De Soto Parish, Louisiana · 5.6 MI East of LA 175 · Structure no. 041601060105601

Built
1959
66 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
1,398
2021 count
Owner
State
State Highway Agency

About this bridge

LA0177 over Little Wallace Bayou is a concrete culvert carrying LA0177 over Little Wallace Bayou in De Soto Parish, Louisiana. It was built in 1959, so it is 66 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 1,398 vehicles a day, roughly 19% of them trucks, projected to reach 1,537 by 2041. The structure is 32 ft (9.8 m) long and 45 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLA0177
CrossesLittle Wallace Bayou
Location5.6 MI East of LA 175
RouteState Highway 177
CountyDe Soto Parish
StateLouisiana
Coordinates31.8962, -93.4627
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width45 ft (13.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,398 (2021)
Projected traffic1,537 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 LA0177 over Little Wallace Bayou built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0177 over Little Wallace Bayou 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 June 2023.

How much traffic does LA0177 over Little Wallace Bayou carry?

About 1,398 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is LA0177 over Little Wallace Bayou?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 45 ft wide.

Who owns LA0177 over Little Wallace Bayou?

It is owned by the State Highway Agency.