US Bridges

E. Main ST over Yankee Bayou

FairPosted for load

Lafourche Parish, Louisiana · 0.06 MI SE of LA 308 · Structure no. 022929232901621

Built
1971
54 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
152
2020 count
Owner
County
County Highway Agency

About this bridge

E. Main ST over Yankee Bayou is a concrete slab carrying E. Main ST over Yankee Bayou in Lafourche Parish, Louisiana. It was built in 1971, so it is 54 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. Its operating status is: posted for load restriction.

It carries about 152 vehicles a day, projected to reach 167 by 2040. The structure is 120 ft (36.6 m) long and 46 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesE. Main ST
CrossesYankee Bayou
Location0.06 MI SE of LA 308
RouteCounty Highway 0
CountyLafourche Parish
StateLouisiana
Coordinates29.38863, -90.263
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width46 ft (14 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic152 (2020)
Projected traffic167 by 2040
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$409,000
NavigationNo navigation control on waterway

Frequently asked questions

When was E. Main ST over Yankee Bayou built?

It was built in 1971, making it 54 years old in 2025.

What condition is E. Main ST over Yankee 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 June 2023.

How much traffic does E. Main ST over Yankee Bayou carry?

About 152 vehicles per day (2020 count).

How long is E. Main ST over Yankee Bayou?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 46 ft wide.

Who owns E. Main ST over Yankee Bayou?

It is owned by the County Highway Agency.