US Bridges

US0071 over Bayou Petite Prairie

Fair

St. Landry Parish, Louisiana · 0.01 MI NW of LA 361 · Structure no. 034900080600371

Built
1954
71 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
22 ft
4 main spans
Daily traffic
2,628
2022 count
Owner
State
State Highway Agency

About this bridge

US0071 over Bayou Petite Prairie is a concrete culvert carrying US0071 over Bayou Petite Prairie in St. Landry Parish, Louisiana. It was built in 1954, so it is 71 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 2,628 vehicles a day, roughly 13% of them trucks, projected to reach 2,890 by 2042. The structure is 22 ft (6.7 m) long and 71 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS0071
CrossesBayou Petite Prairie
Location0.01 MI NW of LA 361
RouteU.S. Route 71
CountySt. Landry Parish
StateLouisiana
Coordinates30.73442, -91.9832
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating82.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span5 ft (1.5 m)
Deck width71 ft (21.6 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,628 (2022)
Projected traffic2,890 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 US0071 over Bayou Petite Prairie built?

It was built in 1954, making it 71 years old in 2025.

What condition is US0071 over Bayou Petite Prairie 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 US0071 over Bayou Petite Prairie carry?

About 2,628 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is US0071 over Bayou Petite Prairie?

The structure is 22 ft (6.7 m) long with a longest span of 5 ft (1.5 m) and a deck 71 ft wide.

Who owns US0071 over Bayou Petite Prairie?

It is owned by the State Highway Agency.