US Bridges

LA0021 over Drain

Good

Washington Parish, Louisiana · 2.2 M N of LA 10 · Structure no. 625900300402541

Built
1965
60 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
6,741
2021 count
Owner
State
State Highway Agency

About this bridge

LA0021 over Drain is a concrete slab carrying LA0021 over Drain in Washington Parish, Louisiana. It was built in 1965, so it is 60 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,741 vehicles a day, roughly 11% of them trucks, projected to reach 7,415 by 2041. The structure is 100 ft (30.5 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0021
CrossesDrain
Location2.2 M N of LA 10
RouteState Highway 21
Coordinates30.8259, -89.8413
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,741 (2021)
Projected traffic7,415 by 2041
Trucks11%
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 LA0021 over Drain built?

It was built in 1965, making it 60 years old in 2025.

What condition is LA0021 over Drain 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 June 2024.

How much traffic does LA0021 over Drain carry?

About 6,741 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0021 over Drain?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns LA0021 over Drain?

It is owned by the State Highway Agency.