US Bridges

LA0384 over Black Bayou Canal

Good

Calcasieu Parish, Louisiana · 8.2 MI NW of LA 385 · Structure no. 071000000070205

Built
2006
19 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
115 ft
10 main spans
Daily traffic
988
2021 count
Owner
State
State Highway Agency

About this bridge

LA0384 over Black Bayou Canal is a concrete culvert carrying LA0384 over Black Bayou Canal in Calcasieu Parish, Louisiana. It was built in 2006, so it is 19 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 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 988 vehicles a day, roughly 17% of them trucks, projected to reach 1,086 by 2041. The structure is 115 ft (35.1 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0384
CrossesBlack Bayou Canal
Location8.2 MI NW of LA 385
RouteState Highway 384
Coordinates30.07714, -93.28665
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionNovember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans10
Design loadHS 20
Structure length115 ft (35.1 m)
Longest span10 ft (3 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic988 (2021)
Projected traffic1,086 by 2041
Trucks17%
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 LA0384 over Black Bayou Canal built?

It was built in 2006, making it 19 years old in 2025.

What condition is LA0384 over Black Bayou 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 November 2024.

How much traffic does LA0384 over Black Bayou Canal carry?

About 988 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is LA0384 over Black Bayou Canal?

The structure is 115 ft (35.1 m) long with a longest span of 10 ft (3 m) and a deck 47 ft wide.

Who owns LA0384 over Black Bayou Canal?

It is owned by the State Highway Agency.