US Bridges

LA0516 over Black Lake Bayou

Fair

Bienville Parish, Louisiana · 4.5 Mi. E. of LA 792 · Structure no. 040700000040434

Built
2016
9 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
280 ft
14 main spans
Daily traffic
177
2021 count
Owner
State
State Highway Agency

About this bridge

LA0516 over Black Lake Bayou is a concrete slab carrying LA0516 over Black Lake Bayou in Bienville Parish, Louisiana. It was built in 2016, so it is 9 years old, younger 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 177 vehicles a day, roughly 25% of them trucks, projected to reach 194 by 2041. The structure is 280 ft (85.3 m) long and 34 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesLA0516
CrossesBlack Lake Bayou
Location4.5 Mi. E. of LA 792
RouteState Highway 516
CountyBienville Parish
StateLouisiana
Coordinates32.4059, -93.157
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
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 rating66 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans14
Design loadHL 93
Structure length280 ft (85.3 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic177 (2021)
Projected traffic194 by 2041
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0516 over Black Lake Bayou built?

It was built in 2016, making it 9 years old in 2025.

What condition is LA0516 over Black Lake 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 October 2024.

How much traffic does LA0516 over Black Lake Bayou carry?

About 177 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is LA0516 over Black Lake Bayou?

The structure is 280 ft (85.3 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns LA0516 over Black Lake Bayou?

It is owned by the State Highway Agency.