US Bridges

US0171 over Sales Branch

Good

Vernon Parish, Louisiana · .25 MI North of LA 1211 · Structure no. 085800240616401

Built
1975
50 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete
Length
181 ft
9 main spans
Daily traffic
17,200
2021 count
Owner
State
State Highway Agency

About this bridge

US0171 over Sales Branch is a concrete slab carrying US0171 over Sales Branch in Vernon Parish, Louisiana. It was built in 1975, so it is 50 years old, older 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 17,200 vehicles a day, roughly 14% of them trucks, projected to reach 18,920 by 2041. The structure is 181 ft (55.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS0171
CrossesSales Branch
Location.25 MI North of LA 1211
RouteU.S. Route 171
Coordinates31.11658, -93.2707
Functional classUrban Other Principal Arterial

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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating79 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,200 (2021)
Projected traffic18,920 by 2041
Trucks14%
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 Sales Branch built?

It was built in 1975, making it 50 years old in 2025.

What condition is US0171 over Sales Branch 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 February 2024.

How much traffic does US0171 over Sales Branch carry?

About 17,200 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is US0171 over Sales Branch?

The structure is 181 ft (55.2 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns US0171 over Sales Branch?

It is owned by the State Highway Agency.