US Bridges

LA0024 over Bayou Terrebonne

Good

Terrebonne Parish, Louisiana · LA0024 · Structure no. 025500659110383

Built
1974
51 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
312
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 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 312 vehicles a day, roughly 11% of them trucks, projected to reach 343 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
Coordinates29.59934, -90.7338
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
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 alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating28.5 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 traffic312 (2015)
Projected traffic343 by 2035
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 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 January 2024.

How much traffic does LA0024 over Bayou Terrebonne carry?

About 312 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.