US Bridges

LA0076 over Lower Maringouin Canal

Good

Iberville Parish, Louisiana · 2.3 M N of LA 3000 · Structure no. 612408241203521

Built
1964
61 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
7,562
2021 count
Owner
State
State Highway Agency

About this bridge

LA0076 over Lower Maringouin Canal is a concrete slab carrying LA0076 over Lower Maringouin Canal in Iberville Parish, Louisiana. It was built in 1964, so it is 61 years old, older 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 7,562 vehicles a day, roughly 10% of them trucks, projected to reach 8,318 by 2041. The structure is 80 ft (24.4 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLA0076
CrossesLower Maringouin Canal
Location2.3 M N of LA 3000
RouteState Highway 76
Coordinates30.44246, -91.51827
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating53 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,562 (2021)
Projected traffic8,318 by 2041
Trucks10%
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 LA0076 over Lower Maringouin Canal built?

It was built in 1964, making it 61 years old in 2025.

What condition is LA0076 over Lower Maringouin Canal 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 June 2023.

How much traffic does LA0076 over Lower Maringouin Canal carry?

About 7,562 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0076 over Lower Maringouin Canal?

The structure is 80 ft (24.4 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns LA0076 over Lower Maringouin Canal?

It is owned by the State Highway Agency.