US Bridges

US0171 over Choctaw Bayou

Fair

Sabine Parish, Louisiana · 1.1 Mi. North of LA 174 · Structure no. 084300250408322

Built
1962
63 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
160 ft
8 main spans
Daily traffic
4,790
2021 count
Owner
State
State Highway Agency

About this bridge

US0171 over Choctaw Bayou is a concrete slab carrying US0171 over Choctaw Bayou in Sabine Parish, Louisiana. It was built in 1962, so it is 63 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 4,790 vehicles a day, roughly 15% of them trucks, projected to reach 5,269 by 2041. The structure is 160 ft (48.8 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS0171
CrossesChoctaw Bayou
Location1.1 Mi. North of LA 174
RouteU.S. Route 171
CountySabine Parish
StateLouisiana
Coordinates31.79545, -93.6926
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,790 (2021)
Projected traffic5,269 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 SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$741,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US0171 over Choctaw Bayou built?

It was built in 1962, making it 63 years old in 2025.

What condition is US0171 over Choctaw 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 September 2024.

How much traffic does US0171 over Choctaw Bayou carry?

About 4,790 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is US0171 over Choctaw Bayou?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns US0171 over Choctaw Bayou?

It is owned by the State Highway Agency.