US Bridges

I0010 over LA 77 LA 411 Bayou

Fair

Iberville Parish, Louisiana · I0010 · Structure no. 612404500712891

Built
1972
53 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,430 ft
26 main spans
Daily traffic
58,734
2021 count
Owner
State
State Highway Agency

About this bridge

I0010 over LA 77 LA 411 Bayou is a prestressed concrete stringer/multi-beam or girder carrying I0010 over LA 77 LA 411 Bayou in Iberville Parish, Louisiana. It was built in 1972, so it is 53 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 58,734 vehicles a day, roughly 28% of them trucks, projected to reach 64,607 by 2041. The structure is 1,430 ft (435.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI0010
CrossesLA 77 LA 411 Bayou
LocationI0010
RouteInterstate 10
Coordinates30.41802, -91.43585
Functional classRural Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans26
Design loadHS 20
Structure length1,430 ft (435.9 m)
Longest span78 ft (23.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58,734 (2021)
Projected traffic64,607 by 2041
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I0010 over LA 77 LA 411 Bayou built?

It was built in 1972, making it 53 years old in 2025.

What condition is I0010 over LA 77 LA 411 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 May 2023.

How much traffic does I0010 over LA 77 LA 411 Bayou carry?

About 58,734 vehicles per day (2021 count), of which roughly 28% are trucks.

How long is I0010 over LA 77 LA 411 Bayou?

The structure is 1,430 ft (435.9 m) long with a longest span of 78 ft (23.8 m) and a deck 43 ft wide.

Who owns I0010 over LA 77 LA 411 Bayou?

It is owned by the State Highway Agency.