US Bridges

La. 585 over Drainage Canal

Good

East Carroll Parish, Louisiana · 0.37 MI E of E.C Line · Structure no. 051800000051803

Built
2024
1 years old
Condition
Good
inspected July 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
200
2023 count
Owner
State
State Highway Agency

About this bridge

La. 585 over Drainage Canal is a concrete slab carrying La. 585 over Drainage Canal in East Carroll Parish, Louisiana. It was built in 2024, so it is 1 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, roughly 12% of them trucks, projected to reach 220 by 2043. The structure is 80 ft (24.4 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLa. 585
CrossesDrainage Canal
Location0.37 MI E of E.C Line
RouteState Highway 585
Coordinates32.9913, -91.25675
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic220 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 La. 585 over Drainage Canal built?

It was built in 2024, making it 1 years old in 2025.

What condition is La. 585 over Drainage Canal 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 July 2024.

How much traffic does La. 585 over Drainage Canal carry?

About 200 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is La. 585 over Drainage Canal?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns La. 585 over Drainage Canal?

It is owned by the State Highway Agency.