US Bridges

LA0585 over Drain

Fair

West Carroll Parish, Louisiana · LA0585 · Structure no. 056203340200121

Built
1985
40 years old
Condition
Fair
inspected January 2023
Type
Culvert
Concrete
Length
34 ft
4 main spans
Daily traffic
565
2021 count
Owner
State
State Highway Agency

About this bridge

LA0585 over Drain is a concrete culvert carrying LA0585 over Drain in West Carroll Parish, Louisiana. It was built in 1985, so it is 40 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 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 565 vehicles a day, roughly 15% of them trucks, projected to reach 621 by 2041. The structure is 34 ft (10.4 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLA0585
CrossesDrain
LocationLA0585
RouteState Highway 585
Coordinates32.78077, -91.5619
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 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 evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span6 ft (1.8 m)
Deck width100 ft (30.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic565 (2021)
Projected traffic621 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Drain built?

It was built in 1985, making it 40 years old in 2025.

What condition is LA0585 over Drain 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 Drain carry?

About 565 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0585 over Drain?

The structure is 34 ft (10.4 m) long with a longest span of 6 ft (1.8 m) and a deck 100 ft wide.

Who owns LA0585 over Drain?

It is owned by the State Highway Agency.