US Bridges

LA0006 over Winn Creek

Fair

Natchitoches Parish, Louisiana · 1.54 Mi. West of LA 6 · Structure no. 083500340401301

Built
1967
58 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
5,328
2021 count
Owner
State
State Highway Agency

About this bridge

LA0006 over Winn Creek is a concrete slab carrying LA0006 over Winn Creek in Natchitoches Parish, Louisiana. It was built in 1967, so it is 58 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 5,328 vehicles a day, roughly 15% of them trucks, projected to reach 5,860 by 2041. The structure is 140 ft (42.7 m) long and 34 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesLA0006
CrossesWinn Creek
Location1.54 Mi. West of LA 6
RouteState Highway 6
Coordinates31.67291, -93.3201
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating56 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,328 (2021)
Projected traffic5,860 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes

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$663,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0006 over Winn Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is LA0006 over Winn Creek 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 February 2024.

How much traffic does LA0006 over Winn Creek carry?

About 5,328 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0006 over Winn Creek?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns LA0006 over Winn Creek?

It is owned by the State Highway Agency.