US Bridges

LA1011 over B. Lafourche (supreme)

Fair

Assumption Parish, Louisiana · 0.04 M SW of LA 1&LA 1011 · Structure no. 610408041200041

Built
1975
50 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
209 ft
11 main spans
Daily traffic
382
2021 count
Owner
State
State Highway Agency

About this bridge

LA1011 over B. Lafourche (supreme) is a concrete slab carrying LA1011 over B. Lafourche (supreme) in Assumption 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 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 382 vehicles a day, roughly 11% of them trucks, projected to reach 420 by 2041. The structure is 209 ft (63.7 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA1011
CrossesB. Lafourche (supreme)
Location0.04 M SW of LA 1&LA 1011
RouteState Highway 1011
CountyAssumption Parish
StateLouisiana
Coordinates29.86006, -90.98049
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans11
Design loadHS 20
Structure length209 ft (63.7 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 traffic382 (2021)
Projected traffic420 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 LA1011 over B. Lafourche (supreme) built?

It was built in 1975, making it 50 years old in 2025.

What condition is LA1011 over B. Lafourche (supreme) 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 June 2024.

How much traffic does LA1011 over B. Lafourche (supreme) carry?

About 382 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA1011 over B. Lafourche (supreme)?

The structure is 209 ft (63.7 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns LA1011 over B. Lafourche (supreme)?

It is owned by the State Highway Agency.