US Bridges

LA0024 over Bayou Terrebonne

Fair

Terrebonne Parish, Louisiana · LA0024 · Structure no. 025500659103921

Built
1941
84 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
126 ft
3 main spans
Daily traffic
8,922
2021 count
Owner
State
State Highway Agency

About this bridge

LA0024 over Bayou Terrebonne is a steel stringer/multi-beam or girder carrying LA0024 over Bayou Terrebonne in Terrebonne Parish, Louisiana. It was built in 1941, so it is 84 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 8,922 vehicles a day, roughly 11% of them trucks, projected to reach 9,814 by 2041. The structure is 126 ft (38.4 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLA0024
CrossesBayou Terrebonne
LocationLA0024
RouteState Highway 24
CountyTerrebonne Parish
StateLouisiana
Coordinates29.56547, -90.6463
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length126 ft (38.4 m)
Longest span51 ft (15.5 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,922 (2021)
Projected traffic9,814 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$607,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0024 over Bayou Terrebonne built?

It was built in 1941, making it 84 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 January 2024.

How much traffic does LA0024 over Bayou Terrebonne carry?

About 8,922 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0024 over Bayou Terrebonne?

The structure is 126 ft (38.4 m) long with a longest span of 51 ft (15.5 m) and a deck 30 ft wide.

Who owns LA0024 over Bayou Terrebonne?

It is owned by the State Highway Agency.