US Bridges

LA0182 over Bayou Black

FairPosted for load

Terrebonne Parish, Louisiana · .01 MI East of LA 20 · Structure no. 025500050400001

Built
1946
79 years old
Condition
Fair
inspected July 2023
Type
Girder and Floorbeam System
Steel
Length
189 ft
1 main span
Daily traffic
3,687
2021 count
Owner
State
State Highway Agency

About this bridge

LA0182 over Bayou Black is a steel girder and floorbeam system carrying LA0182 over Bayou Black in Terrebonne Parish, Louisiana. It was built in 1946, so it is 79 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. Its operating status is: posted for load restriction.

It carries about 3,687 vehicles a day, roughly 20% of them trucks, projected to reach 4,055 by 2041. The structure is 189 ft (57.6 m) long and 25 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesLA0182
CrossesBayou Black
Location.01 MI East of LA 20
RouteState Highway 182
CountyTerrebonne Parish
StateLouisiana
Coordinates29.68508, -90.9988
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29 US tons
Inventory rating12 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadH 15
Structure length189 ft (57.6 m)
Longest span61 ft (18.6 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,687 (2021)
Projected traffic4,055 by 2041
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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$853,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0182 over Bayou Black built?

It was built in 1946, making it 79 years old in 2025.

What condition is LA0182 over Bayou Black 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 July 2023.

How much traffic does LA0182 over Bayou Black carry?

About 3,687 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is LA0182 over Bayou Black?

The structure is 189 ft (57.6 m) long with a longest span of 61 ft (18.6 m) and a deck 25 ft wide.

Who owns LA0182 over Bayou Black?

It is owned by the State Highway Agency.