US Bridges

LA0015 over Black Steep Bayou

Fair

Ouachita Parish, Louisiana · 3.8 MI East of LA 841 · Structure no. 053700261001681

Built
1954
71 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
2,382
2021 count
Owner
State
State Highway Agency

About this bridge

LA0015 over Black Steep Bayou is a concrete slab carrying LA0015 over Black Steep Bayou in Ouachita Parish, Louisiana. It was built in 1954, so it is 71 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 5 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 2,382 vehicles a day, roughly 16% of them trucks, projected to reach 2,620 by 2041. The structure is 80 ft (24.4 m) long and 31 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesLA0015
CrossesBlack Steep Bayou
Location3.8 MI East of LA 841
RouteState Highway 15
CountyOuachita Parish
StateLouisiana
Coordinates32.40779, -92.0187
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37 US tons
Inventory rating22 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 width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,382 (2021)
Projected traffic2,620 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$412,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0015 over Black Steep Bayou built?

It was built in 1954, making it 71 years old in 2025.

What condition is LA0015 over Black Steep 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 August 2024.

How much traffic does LA0015 over Black Steep Bayou carry?

About 2,382 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is LA0015 over Black Steep Bayou?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns LA0015 over Black Steep Bayou?

It is owned by the State Highway Agency.