US Bridges

LA0585 over Bayou

Fair

West Carroll Parish, Louisiana · 0.1 MI N of LA 587 · Structure no. 056203320103781

Built
1986
39 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
584
2021 count
Owner
State
State Highway Agency

About this bridge

LA0585 over Bayou is a concrete slab carrying LA0585 over Bayou in West Carroll Parish, Louisiana. It was built in 1986, so it is 39 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 5 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 584 vehicles a day, roughly 15% of them trucks, projected to reach 642 by 2041. The structure is 80 ft (24.4 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0585
CrossesBayou
Location0.1 MI N of LA 587
RouteState Highway 585
CountyWest Carroll Parish
StateLouisiana
Coordinates32.8635, -91.4927
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating64 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic584 (2021)
Projected traffic642 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 LA0585 over Bayou built?

It was built in 1986, making it 39 years old in 2025.

What condition is LA0585 over Bayou 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 January 2023.

How much traffic does LA0585 over Bayou carry?

About 584 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0585 over Bayou?

The structure is 80 ft (24.4 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA0585 over Bayou?

It is owned by the State Highway Agency.