US Bridges

LA0914 over Black Bayou

FairPosted for load

Catahoula Parish, Louisiana · 0.5 MI E of LA 913 · Structure no. 581308130601401

Built
1965
60 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
57 ft
3 main spans
Daily traffic
77
2021 count
Owner
State
State Highway Agency

About this bridge

LA0914 over Black Bayou is a concrete slab carrying LA0914 over Black Bayou in Catahoula 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 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. Its operating status is: posted for load restriction.

It carries about 77 vehicles a day, roughly 11% of them trucks, projected to reach 84 by 2041. The structure is 57 ft (17.4 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLA0914
CrossesBlack Bayou
Location0.5 MI E of LA 913
RouteState Highway 914
CountyCatahoula Parish
StateLouisiana
Coordinates31.84356, -91.7068
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.3 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77 (2021)
Projected traffic84 by 2041
Trucks11%
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 LA0914 over Black Bayou built?

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

What condition is LA0914 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 LA0914 over Black Bayou carry?

About 77 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0914 over Black Bayou?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns LA0914 over Black Bayou?

It is owned by the State Highway Agency.