US Bridges

LA 388 over Bayou

Fair

Calcasieu Parish, Louisiana · 2.7 MI N of US 90 · Structure no. 071000000070095

Built
1999
26 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
38 ft
2 main spans
Daily traffic
1,325
2023 count
Owner
County
County Highway Agency

About this bridge

LA 388 over Bayou is a concrete slab carrying LA 388 over Bayou in Calcasieu Parish, Louisiana. It was built in 1999, so it is 26 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,325 vehicles a day, projected to reach 1,457 by 2043. The structure is 38 ft (11.6 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesLA 388
CrossesBayou
Location2.7 MI N of US 90
RouteCounty Highway 0
Coordinates30.26549, -93.50352
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,325 (2023)
Projected traffic1,457 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA 388 over Bayou built?

It was built in 1999, making it 26 years old in 2025.

What condition is LA 388 over Bayou in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does LA 388 over Bayou carry?

About 1,325 vehicles per day (2023 count).

How long is LA 388 over Bayou?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns LA 388 over Bayou?

It is owned by the County Highway Agency.