US Bridges

LA0107 over Black Bayou

Fair

Avoyelles Parish, Louisiana · 6.06 Mi. South of LA 1179 · Structure no. 080501470300021

Built
1999
26 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
1,214
2021 count
Owner
State
State Highway Agency

About this bridge

LA0107 over Black Bayou is a concrete culvert carrying LA0107 over Black Bayou in Avoyelles Parish, Louisiana. It was built in 1999, so it is 26 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 1,214 vehicles a day, roughly 14% of them trucks, projected to reach 1,335 by 2041. The structure is 22 ft (6.7 m) long and 100 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesLA0107
CrossesBlack Bayou
Location6.06 Mi. South of LA 1179
RouteState Highway 107
Coordinates30.85014, -91.964
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width100 ft (30.5 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,214 (2021)
Projected traffic1,335 by 2041
Trucks14%
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 LA0107 over Black Bayou built?

It was built in 1999, making it 26 years old in 2025.

What condition is LA0107 over Black 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 January 2024.

How much traffic does LA0107 over Black Bayou carry?

About 1,214 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0107 over Black Bayou?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 100 ft wide.

Who owns LA0107 over Black Bayou?

It is owned by the State Highway Agency.