US Bridges

LA 392 over Drain

Good

Vernon Parish, Louisiana · 2.4 M E of US 171 · Structure no. 085800000080000

Built
2023
2 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
220 ft
11 main spans
Daily traffic
650
2021 count
Owner
State
State Highway Agency

About this bridge

LA 392 over Drain is a concrete slab carrying LA 392 over Drain in Vernon Parish, Louisiana. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 650 vehicles a day, roughly 16% of them trucks, projected to reach 715 by 2041. The structure is 220 ft (67.1 m) long and 34 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLA 392
CrossesDrain
Location2.4 M E of US 171
RouteState Highway 392
Coordinates31.33683, -93.36235
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating66.5 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans11
Design loadGreater than HL 93
Structure length220 ft (67.1 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2021)
Projected traffic715 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 392 over Drain built?

It was built in 2023, making it 2 years old in 2025.

What condition is LA 392 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 October 2023.

How much traffic does LA 392 over Drain carry?

About 650 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is LA 392 over Drain?

The structure is 220 ft (67.1 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns LA 392 over Drain?

It is owned by the State Highway Agency.