US Bridges

US0071 over Bayou Lamourie

Fair

Rapides Parish, Louisiana · 2.96 Mi. North of LA 112 · Structure no. 084000080905661

Built
1977
48 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
5,157
2021 count
Owner
State
State Highway Agency

About this bridge

US0071 over Bayou Lamourie is a concrete slab carrying US0071 over Bayou Lamourie in Rapides Parish, Louisiana. It was built in 1977, so it is 48 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 5,157 vehicles a day, roughly 15% of them trucks, projected to reach 5,672 by 2041. The structure is 100 ft (30.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS0071
CrossesBayou Lamourie
Location2.96 Mi. North of LA 112
RouteU.S. Route 71
Coordinates31.12951, -92.4074
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating47 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 (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,157 (2021)
Projected traffic5,672 by 2041
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Lamourie built?

It was built in 1977, making it 48 years old in 2025.

What condition is US0071 over Bayou Lamourie 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 March 2024.

How much traffic does US0071 over Bayou Lamourie carry?

About 5,157 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is US0071 over Bayou Lamourie?

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 US0071 over Bayou Lamourie?

It is owned by the State Highway Agency.