US Bridges

LA0024 over SPRR & LA 20

Fair

Terrebonne Parish, Louisiana · LA0024 · Structure no. 025500659121701

Built
1970
55 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
2,172 ft
31 main spans
Daily traffic
28,505
2021 count
Owner
State
State Highway Agency

About this bridge

LA0024 over SPRR & LA 20 is a prestressed concrete stringer/multi-beam or girder carrying LA0024 over SPRR & LA 20 in Terrebonne Parish, Louisiana. It was built in 1970, so it is 55 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 5 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 28,505 vehicles a day, roughly 10% of them trucks, projected to reach 31,355 by 2041. The structure is 2,172 ft (662 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0024
CrossesSPRR & LA 20
LocationLA0024
RouteState Highway 24
CountyTerrebonne Parish
StateLouisiana
Coordinates29.74513, -90.8113
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans31
Design loadHS 20
Structure length2,172 ft (662 m)
Longest span70 ft (21.3 m)
Deck width65 ft (19.9 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,505 (2021)
Projected traffic31,355 by 2041
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was LA0024 over SPRR & LA 20 built?

It was built in 1970, making it 55 years old in 2025.

What condition is LA0024 over SPRR & LA 20 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 November 2023.

How much traffic does LA0024 over SPRR & LA 20 carry?

About 28,505 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0024 over SPRR & LA 20?

The structure is 2,172 ft (662 m) long with a longest span of 70 ft (21.3 m) and a deck 65 ft wide.

Who owns LA0024 over SPRR & LA 20?

It is owned by the State Highway Agency.