US Bridges

LA0031 over Bayou Teche

Fair

St. Landry Parish, Louisiana · 0.02 MI W of LA 347 · Structure no. 034904040400251

Built
1960
65 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
200 ft
10 main spans
Daily traffic
1,807
2021 count
Owner
State
State Highway Agency

About this bridge

LA0031 over Bayou Teche is a concrete slab carrying LA0031 over Bayou Teche in St. Landry Parish, Louisiana. It was built in 1960, so it is 65 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 1,807 vehicles a day, roughly 13% of them trucks, projected to reach 1,987 by 2041. The structure is 200 ft (61 m) long and 41 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesLA0031
CrossesBayou Teche
Location0.02 MI W of LA 347
RouteState Highway 31
CountySt. Landry Parish
StateLouisiana
Coordinates30.39737, -91.9304
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.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
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 rating42 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length200 ft (61 m)
Longest span20 ft (6.1 m)
Deck width41 ft (12.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,807 (2021)
Projected traffic1,987 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 LA0031 over Bayou Teche built?

It was built in 1960, making it 65 years old in 2025.

What condition is LA0031 over Bayou Teche 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 May 2023.

How much traffic does LA0031 over Bayou Teche carry?

About 1,807 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is LA0031 over Bayou Teche?

The structure is 200 ft (61 m) long with a longest span of 20 ft (6.1 m) and a deck 41 ft wide.

Who owns LA0031 over Bayou Teche?

It is owned by the State Highway Agency.