US Bridges

LA0024 over Bayou Terrebonne

Fair

Terrebonne Parish, Louisiana · LA0024 · Structure no. 025500659109333

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
95 ft
5 main spans
Daily traffic
2,800
2014 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 1975, so it is 50 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 2,800 vehicles a day, roughly 9% of them trucks, projected to reach 3,080 by 2034. The structure is 95 ft (29 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0024
CrossesBayou Terrebonne
LocationLA0024
RouteState Highway 24
CountyTerrebonne Parish
StateLouisiana
Coordinates29.59908, -90.7175
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
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating36.8 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length95 ft (29 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 traffic2,800 (2014)
Projected traffic3,080 by 2034
Trucks9%
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 1975, making it 50 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 December 2024.

How much traffic does LA0024 over Bayou Terrebonne carry?

About 2,800 vehicles per day (2014 count), of which roughly 9% are trucks.

How long is LA0024 over Bayou Terrebonne?

The structure is 95 ft (29 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.