US Bridges

LA0024 over Little Caillou

FairPosted for load

Terrebonne Parish, Louisiana · 0.01 MI S of LA 659 · Structure no. 025500659104061

Built
1941
84 years old
Condition
Fair
inspected September 2024
Type
Movable - Lift
Steel
Length
112 ft
1 main span
Daily traffic
8,922
2021 count
Owner
State
State Highway Agency

About this bridge

LA0024 over Little Caillou is a steel movable - lift carrying LA0024 over Little Caillou 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. Its operating status is: posted for load restriction.

It carries about 8,922 vehicles a day, roughly 11% of them trucks, projected to reach 9,814 by 2041. The structure is 112 ft (34.1 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
CrossesLittle Caillou
Location0.01 MI S of LA 659
RouteState Highway 24
CountyTerrebonne Parish
StateLouisiana
Coordinates29.56367, -90.64758
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating22.5 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length112 ft (34.1 m)
Longest span56 ft (17.1 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck14 ft (4.3 m)

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 statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$549,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0024 over Little Caillou built?

It was built in 1941, making it 84 years old in 2025.

What condition is LA0024 over Little Caillou 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 Little Caillou carry?

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

How long is LA0024 over Little Caillou?

The structure is 112 ft (34.1 m) long with a longest span of 56 ft (17.1 m) and a deck 30 ft wide.

Who owns LA0024 over Little Caillou?

It is owned by the State Highway Agency.