US Bridges

LA3089 over Bayou Lafourche

Good

Ascension Parish, Louisiana · LA 3089 @ Bayou Lafourche · Structure no. 610304260100051

Built
2001
24 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
40 ft
1 main span
Daily traffic
17,685
2021 count
Owner
State
State Highway Agency

About this bridge

LA3089 over Bayou Lafourche is a prestressed concrete continuous stringer/multi-beam or girder carrying LA3089 over Bayou Lafourche in Ascension Parish, Louisiana. It was built in 2001, so it is 24 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 17,685 vehicles a day, roughly 9% of them trucks, projected to reach 19,453 by 2041. The structure is 40 ft (12.2 m) long and 66 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA3089
CrossesBayou Lafourche
LocationLA 3089 @ Bayou Lafourche
RouteState Highway 3089
CountyAscension Parish
StateLouisiana
Coordinates30.10096, -90.99366
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width66 ft (20.1 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,685 (2021)
Projected traffic19,453 by 2041
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA3089 over Bayou Lafourche built?

It was built in 2001, making it 24 years old in 2025.

What condition is LA3089 over Bayou Lafourche in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does LA3089 over Bayou Lafourche carry?

About 17,685 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is LA3089 over Bayou Lafourche?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 66 ft wide.

Who owns LA3089 over Bayou Lafourche?

It is owned by the State Highway Agency.