US Bridges

LA0024 over Bayou Terrebonne

Fair

Terrebonne Parish, Louisiana · 0.4 Mi. E of Intracoastal · Structure no. 025502460100021

Built
2006
19 years old
Condition
Fair
inspected September 2024
Type
Movable - Lift
Steel
Length
155 ft
1 main span
Daily traffic
30,800
2016 count
Owner
State
State Highway Agency

About this bridge

LA0024 over Bayou Terrebonne is a steel movable - lift carrying LA0024 over Bayou Terrebonne in Terrebonne Parish, Louisiana. It was built in 2006, so it is 19 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 30,800 vehicles a day, roughly 10% of them trucks, projected to reach 33,880 by 2036. The structure is 155 ft (47.2 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0024
CrossesBayou Terrebonne
Location0.4 Mi. E of Intracoastal
RouteState Highway 57
CountyTerrebonne Parish
StateLouisiana
Coordinates29.59811, -90.7039
Functional classUrban Other Principal Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span57 ft (17.4 m)
Deck width67 ft (20.4 m)
Roadway width53 ft (16.1 m)
Vertical clearance over deck20 ft (6.1 m)

Traffic and service

Average daily traffic30,800 (2016)
Projected traffic33,880 by 2036
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0024 over Bayou Terrebonne built?

It was built in 2006, making it 19 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 September 2024.

How much traffic does LA0024 over Bayou Terrebonne carry?

About 30,800 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is LA0024 over Bayou Terrebonne?

The structure is 155 ft (47.2 m) long with a longest span of 57 ft (17.4 m) and a deck 67 ft wide.

Who owns LA0024 over Bayou Terrebonne?

It is owned by the State Highway Agency.