US Bridges

LA0847 over Bayou Lafourche Cutoff

Good

Caldwell Parish, Louisiana · 1.1 MI W of LA 133 · Structure no. 581100000580202

Built
2018
7 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
552 ft
6 main spans
Daily traffic
438
2021 count
Owner
State
State Highway Agency

About this bridge

LA0847 over Bayou Lafourche Cutoff is a concrete stringer/multi-beam or girder carrying LA0847 over Bayou Lafourche Cutoff in Caldwell Parish, Louisiana. It was built in 2018, so it is 7 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 438 vehicles a day, roughly 15% of them trucks, projected to reach 481 by 2041. The structure is 552 ft (168.2 m) long and 30 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesLA0847
CrossesBayou Lafourche Cutoff
Location1.1 MI W of LA 133
RouteState Highway 847
Coordinates32.19494, -92.02828
Functional classRural Minor Collector

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating58.2 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length552 ft (168.2 m)
Longest span94 ft (28.7 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic438 (2021)
Projected traffic481 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 LA0847 over Bayou Lafourche Cutoff built?

It was built in 2018, making it 7 years old in 2025.

What condition is LA0847 over Bayou Lafourche Cutoff 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 July 2024.

How much traffic does LA0847 over Bayou Lafourche Cutoff carry?

About 438 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0847 over Bayou Lafourche Cutoff?

The structure is 552 ft (168.2 m) long with a longest span of 94 ft (28.7 m) and a deck 30 ft wide.

Who owns LA0847 over Bayou Lafourche Cutoff?

It is owned by the State Highway Agency.