US Bridges

LA0077 over Richard Bayou

Fair

Iberville Parish, Louisiana · LA0077 · Structure no. 612402190200811

Built
1968
57 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
4,376
2021 count
Owner
State
State Highway Agency

About this bridge

LA0077 over Richard Bayou is a concrete slab carrying LA0077 over Richard Bayou in Iberville Parish, Louisiana. It was built in 1968, so it is 57 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 4,376 vehicles a day, roughly 10% of them trucks, projected to reach 4,813 by 2041. The structure is 100 ft (30.5 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0077
CrossesRichard Bayou
LocationLA0077
RouteState Highway 77
CountyIberville Parish
StateLouisiana
Coordinates30.27969, -91.31977
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.
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 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 spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,376 (2021)
Projected traffic4,813 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 LA0077 over Richard Bayou built?

It was built in 1968, making it 57 years old in 2025.

What condition is LA0077 over Richard 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 LA0077 over Richard Bayou carry?

About 4,376 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0077 over Richard Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns LA0077 over Richard Bayou?

It is owned by the State Highway Agency.