US Bridges

US0171 over Lewis Creek

Good

Sabine Parish, Louisiana · 1.67 Mi. North of LA 175 · Structure no. 084300250302851

Built
1990
35 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
160 ft
8 main spans
Daily traffic
3,273
2021 count
Owner
State
State Highway Agency

About this bridge

US0171 over Lewis Creek is a concrete slab carrying US0171 over Lewis Creek in Sabine Parish, Louisiana. It was built in 1990, so it is 35 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,273 vehicles a day, roughly 15% of them trucks, projected to reach 3,600 by 2041. The structure is 160 ft (48.8 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS0171
CrossesLewis Creek
Location1.67 Mi. North of LA 175
RouteU.S. Route 171
Coordinates31.59002, -93.5269
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating80 US tons
Inventory rating47 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 width47 ft (14.3 m)
Roadway width44 ft (13.4 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 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 US0171 over Lewis Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is US0171 over Lewis Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does US0171 over Lewis Creek carry?

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

How long is US0171 over Lewis Creek?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 47 ft wide.

Who owns US0171 over Lewis Creek?

It is owned by the State Highway Agency.