US Bridges

LA0869 over Mound Bayou

Good

Franklin Parish, Louisiana · 2.1 MI North of LA 618 · Structure no. 582108212102101

Built
1965
60 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
455
2021 count
Owner
State
State Highway Agency

About this bridge

LA0869 over Mound Bayou is a concrete slab carrying LA0869 over Mound Bayou in Franklin Parish, Louisiana. It was built in 1965, so it is 60 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 455 vehicles a day, roughly 11% of them trucks, projected to reach 500 by 2041. The structure is 80 ft (24.4 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLA0869
CrossesMound Bayou
Location2.1 MI North of LA 618
RouteState Highway 869
Coordinates32.20852, -91.7893
Functional classRural Local

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum 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 span20 ft (6.1 m)
Deck width30 ft (9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic455 (2021)
Projected traffic500 by 2041
Trucks11%
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 LA0869 over Mound Bayou built?

It was built in 1965, making it 60 years old in 2025.

What condition is LA0869 over Mound Bayou 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 October 2023.

How much traffic does LA0869 over Mound Bayou carry?

About 455 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0869 over Mound Bayou?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns LA0869 over Mound Bayou?

It is owned by the State Highway Agency.