US Bridges

LA0307 over Bayou Boeuf

Fair

Lafourche Parish, Louisiana · 9.2 MI North of LA 182 · Structure no. 022908291510171

Built
1976
49 years old
Condition
Fair
inspected February 2023
Type
Movable - Lift
Steel
Length
278 ft
1 main span
Daily traffic
2,271
2021 count
Owner
State
State Highway Agency

About this bridge

LA0307 over Bayou Boeuf is a steel movable - lift carrying LA0307 over Bayou Boeuf in Lafourche Parish, Louisiana. It was built in 1976, so it is 49 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.

It carries about 2,271 vehicles a day, roughly 12% of them trucks, projected to reach 2,498 by 2041. The structure is 278 ft (84.7 m) long and 32 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesLA0307
CrossesBayou Boeuf
Location9.2 MI North of LA 182
RouteState Highway 307
CountyLafourche Parish
StateLouisiana
Coordinates29.8694, -90.5954
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckOpen grating
Main spans1 (+10 approach)
Design loadHS 20
Structure length278 ft (84.7 m)
Longest span78 ft (23.8 m)
Deck width32 ft (9.8 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deck17 ft (5.3 m)

Traffic and service

Average daily traffic2,271 (2021)
Projected traffic2,498 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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$1.2 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0307 over Bayou Boeuf built?

It was built in 1976, making it 49 years old in 2025.

What condition is LA0307 over Bayou Boeuf 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 February 2023.

How much traffic does LA0307 over Bayou Boeuf carry?

About 2,271 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is LA0307 over Bayou Boeuf?

The structure is 278 ft (84.7 m) long with a longest span of 78 ft (23.8 m) and a deck 32 ft wide.

Who owns LA0307 over Bayou Boeuf?

It is owned by the State Highway Agency.