US Bridges

LA0024 over Bayou Terrebonne

Fair

Terrebonne Parish, Louisiana · LA0024 · Structure no. 025500000203990

Built
1974
51 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
259
2015 count
Owner
State
State Highway Agency

About this bridge

LA0024 over Bayou Terrebonne is a concrete slab carrying LA0024 over Bayou Terrebonne in Terrebonne Parish, Louisiana. It was built in 1974, so it is 51 years old, older 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 259 vehicles a day, roughly 11% of them trucks, projected to reach 284 by 2035. The structure is 76 ft (23.2 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0024
CrossesBayou Terrebonne
LocationLA0024
RouteState Highway 24
Coordinates29.64304, -90.7613
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic259 (2015)
Projected traffic284 by 2035
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 LA0024 over Bayou Terrebonne built?

It was built in 1974, making it 51 years old in 2025.

What condition is LA0024 over Bayou Terrebonne 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 February 2023.

How much traffic does LA0024 over Bayou Terrebonne carry?

About 259 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is LA0024 over Bayou Terrebonne?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns LA0024 over Bayou Terrebonne?

It is owned by the State Highway Agency.