US Bridges

US0080 over Lafourche Bayou

Fair

Richland Parish, Louisiana · 3.6 MI W of LA 133 · Structure no. 054200000050235

Built
2017
8 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
560 ft
7 main spans
Daily traffic
2,747
2021 count
Owner
State
State Highway Agency

About this bridge

US0080 over Lafourche Bayou is a prestressed concrete box beam or girders - multiple carrying US0080 over Lafourche Bayou in Richland Parish, Louisiana. It was built in 2017, so it is 8 years old, younger 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 2,747 vehicles a day, roughly 15% of them trucks, projected to reach 3,021 by 2041. The structure is 560 ft (170.7 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS0080
CrossesLafourche Bayou
Location3.6 MI W of LA 133
RouteU.S. Route 80
CountyRichland Parish
StateLouisiana
Coordinates32.50059, -91.91873
Functional classRural Major 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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans7
Design loadGreater than HL 93
Structure length560 ft (170.7 m)
Longest span80 ft (24.4 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,747 (2021)
Projected traffic3,021 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 US0080 over Lafourche Bayou built?

It was built in 2017, making it 8 years old in 2025.

What condition is US0080 over Lafourche Bayou 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 August 2023.

How much traffic does US0080 over Lafourche Bayou carry?

About 2,747 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is US0080 over Lafourche Bayou?

The structure is 560 ft (170.7 m) long with a longest span of 80 ft (24.4 m) and a deck 43 ft wide.

Who owns US0080 over Lafourche Bayou?

It is owned by the State Highway Agency.