US Bridges

LA0365 over Bayou Wykoff

Fair

Acadia Parish, Louisiana · 1.6 MI East of LA 1101 · Structure no. 030102200203111

Built
1959
66 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
140 ft
7 main spans
Daily traffic
1,042
2019 count
Owner
State
State Highway Agency

About this bridge

LA0365 over Bayou Wykoff is a concrete slab carrying LA0365 over Bayou Wykoff in Acadia Parish, Louisiana. It was built in 1959, so it is 66 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 1,042 vehicles a day, roughly 13% of them trucks, projected to reach 1,146 by 2039. The structure is 140 ft (42.7 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLA0365
CrossesBayou Wykoff
Location1.6 MI East of LA 1101
RouteState Highway 365
CountyAcadia Parish
StateLouisiana
Coordinates30.34951, -92.2163
Functional classRural Major Collector

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length140 ft (42.7 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,042 (2019)
Projected traffic1,146 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

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 LA0365 over Bayou Wykoff built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0365 over Bayou Wykoff 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 May 2023.

How much traffic does LA0365 over Bayou Wykoff carry?

About 1,042 vehicles per day (2019 count), of which roughly 13% are trucks.

How long is LA0365 over Bayou Wykoff?

The structure is 140 ft (42.7 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0365 over Bayou Wykoff?

It is owned by the State Highway Agency.