US Bridges

LA0887 over Black River Bayou

PoorPosted for load

Tensas Parish, Louisiana · .1 MI West of LA 608 · Structure no. 585401810205971

Built
1970
55 years old
Condition
Poor
inspected February 2023
Type
Slab
Concrete
Length
154 ft
8 main spans
Daily traffic
58
2021 count
Owner
State
State Highway Agency

About this bridge

LA0887 over Black River Bayou is a concrete slab carrying LA0887 over Black River Bayou in Tensas Parish, Louisiana. It was built in 1970, so it is 55 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 58 vehicles a day, roughly 15% of them trucks, projected to reach 63 by 2041. The structure is 154 ft (46.9 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesLA0887
CrossesBlack River Bayou
Location.1 MI West of LA 608
RouteState Highway 887
Coordinates32.0749, -91.2244
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating23.6 US tons
Inventory rating18.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans8
Design loadHS 20
Structure length154 ft (46.9 m)
Longest span19 ft (5.8 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58 (2021)
Projected traffic63 by 2041
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$717,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0887 over Black River Bayou built?

It was built in 1970, making it 55 years old in 2025.

What condition is LA0887 over Black River Bayou in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2023.

How much traffic does LA0887 over Black River Bayou carry?

About 58 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is LA0887 over Black River Bayou?

The structure is 154 ft (46.9 m) long with a longest span of 19 ft (5.8 m) and a deck 35 ft wide.

Who owns LA0887 over Black River Bayou?

It is owned by the State Highway Agency.