US Bridges

LA0024 over Bayou Terrebonne

Fair

Terrebonne Parish, Louisiana · LA 24 · Structure no. 025500000203850

Built
1975
50 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
114 ft
6 main spans
Daily traffic
322
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 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 322 vehicles a day, roughly 11% of them trucks, projected to reach 354 by 2035. The structure is 114 ft (34.7 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
LocationLA 24
RouteState Highway 24
CountyTerrebonne Parish
StateLouisiana
Coordinates29.59749, -90.7253
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 inspectionFebruary 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 rating72 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length114 ft (34.7 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 traffic322 (2015)
Projected traffic354 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 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 February 2024.

How much traffic does LA0024 over Bayou Terrebonne carry?

About 322 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is LA0024 over Bayou Terrebonne?

The structure is 114 ft (34.7 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.