US Bridges

LA0021 over Drain

Good

Washington Parish, Louisiana · LA 21 · Structure no. 625900300301181

Built
1932
93 years old, rebuilt 1987
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
22 ft
4 main spans
Daily traffic
7,160
2021 count
Owner
State
State Highway Agency

About this bridge

LA0021 over Drain is a concrete culvert carrying LA0021 over Drain in Washington Parish, Louisiana. It was built in 1932 and reconstructed in 1987, so it is 93 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 7,160 vehicles a day, roughly 12% of them trucks, projected to reach 7,876 by 2041. The structure is 22 ft (6.7 m) long and 138 ft wide.

CarriesLA0021
CrossesDrain
LocationLA 21
RouteState Highway 21
Coordinates30.68257, -89.878
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length22 ft (6.7 m)
Longest span5 ft (1.5 m)
Deck width138 ft (42.1 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,160 (2021)
Projected traffic7,876 by 2041
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 1932, making it 93 years old in 2025. It was reconstructed in 1987.

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 7,160 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0021 over Drain?

The structure is 22 ft (6.7 m) long with a longest span of 5 ft (1.5 m) and a deck 138 ft wide.

Who owns LA0021 over Drain?

It is owned by the State Highway Agency.