US Bridges

LA0003 over Black Bayou

Fair

Bossier Parish, Louisiana · 1.31 MI North of LA 162 · Structure no. 040800440201311

Built
1934
91 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
27 ft
4 main spans
Daily traffic
5,200
2016 count
Owner
State
State Highway Agency

About this bridge

LA0003 over Black Bayou is a concrete culvert carrying LA0003 over Black Bayou in Bossier Parish, Louisiana. It was built in 1934, so it is 91 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 5,200 vehicles a day, roughly 26% of them trucks, projected to reach 5,720 by 2036. The structure is 27 ft (8.2 m) long and 50 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesLA0003
CrossesBlack Bayou
Location1.31 MI North of LA 162
RouteState Highway 3
CountyBossier Parish
StateLouisiana
Coordinates32.71574, -93.7388
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length27 ft (8.2 m)
Longest span6 ft (1.8 m)
Deck width50 ft (15.2 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,200 (2016)
Projected traffic5,720 by 2036
Trucks26%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0003 over Black Bayou built?

It was built in 1934, making it 91 years old in 2025.

What condition is LA0003 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 November 2024.

How much traffic does LA0003 over Black Bayou carry?

About 5,200 vehicles per day (2016 count), of which roughly 26% are trucks.

How long is LA0003 over Black Bayou?

The structure is 27 ft (8.2 m) long with a longest span of 6 ft (1.8 m) and a deck 50 ft wide.

Who owns LA0003 over Black Bayou?

It is owned by the State Highway Agency.