US Bridges

LA1008 over Bayou Lafourche

Poor

Assumption Parish, Louisiana · LA1008 · Structure no. 610408043700021

Built
1952
73 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
235 ft
6 main spans
Daily traffic
3,279
2021 count
Owner
State
State Highway Agency

About this bridge

LA1008 over Bayou Lafourche is a steel stringer/multi-beam or girder carrying LA1008 over Bayou Lafourche in Assumption Parish, Louisiana. It was built in 1952, so it is 73 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,279 vehicles a day, roughly 11% of them trucks, projected to reach 3,606 by 2041. The structure is 235 ft (71.6 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesLA1008
CrossesBayou Lafourche
LocationLA1008
RouteState Highway 1008
Coordinates29.94126, -91.0236
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length235 ft (71.6 m)
Longest span60 ft (18.3 m)
Deck width31 ft (9.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,279 (2021)
Projected traffic3,606 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was LA1008 over Bayou Lafourche built?

It was built in 1952, making it 73 years old in 2025.

What condition is LA1008 over Bayou Lafourche in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does LA1008 over Bayou Lafourche carry?

About 3,279 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA1008 over Bayou Lafourche?

The structure is 235 ft (71.6 m) long with a longest span of 60 ft (18.3 m) and a deck 31 ft wide.

Who owns LA1008 over Bayou Lafourche?

It is owned by the State Highway Agency.