US Bridges

US0171 over Bayou Scie Tributary

Fair

Sabine Parish, Louisiana · 1 Mile South of LA 1216 · Structure no. 084300250308511

Built
2007
18 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
3,273
2021 count
Owner
State
State Highway Agency

About this bridge

US0171 over Bayou Scie Tributary is a concrete slab carrying US0171 over Bayou Scie Tributary in Sabine Parish, Louisiana. It was built in 2007, so it is 18 years old, younger 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 3,273 vehicles a day, roughly 15% of them trucks, projected to reach 3,600 by 2041. The structure is 80 ft (24.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS0171
CrossesBayou Scie Tributary
Location1 Mile South of LA 1216
RouteU.S. Route 171
CountySabine Parish
StateLouisiana
Coordinates31.62703, -93.6122
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,273 (2021)
Projected traffic3,600 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US0171 over Bayou Scie Tributary built?

It was built in 2007, making it 18 years old in 2025.

What condition is US0171 over Bayou Scie Tributary 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 October 2024.

How much traffic does US0171 over Bayou Scie Tributary carry?

About 3,273 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is US0171 over Bayou Scie Tributary?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns US0171 over Bayou Scie Tributary?

It is owned by the State Highway Agency.