US Bridges

LA0182 over Bayou Terrebonne

PoorPosted for load

Terrebonne Parish, Louisiana · 0.1 MI East of LA 24 West · Structure no. 025500050507161

Built
1954
71 years old
Condition
Poor
inspected November 2024
Type
Girder and Floorbeam System
Steel
Length
86 ft
1 main span
Daily traffic
3,687
2021 count
Owner
State
State Highway Agency

About this bridge

LA0182 over Bayou Terrebonne is a steel girder and floorbeam system carrying LA0182 over Bayou Terrebonne in Terrebonne 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 poor condition with a lowest component rating of 3 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 3,687 vehicles a day, roughly 10% of them trucks, projected to reach 4,055 by 2041. The structure is 86 ft (26.2 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0182
CrossesBayou Terrebonne
Location0.1 MI East of LA 24 West
RouteState Highway 182
Coordinates29.59889, -90.71893
Functional classUrban Minor Arterial

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionNovember 2024
Inspection intervalevery 12 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating20.7 US tons
Inventory rating16.1 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans1 (+2 approach)
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span54 ft (16.5 m)
Deck width40 ft (12.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,687 (2021)
Projected traffic4,055 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$436,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0182 over Bayou Terrebonne built?

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

What condition is LA0182 over Bayou Terrebonne 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 November 2024.

How much traffic does LA0182 over Bayou Terrebonne carry?

About 3,687 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0182 over Bayou Terrebonne?

The structure is 86 ft (26.2 m) long with a longest span of 54 ft (16.5 m) and a deck 40 ft wide.

Who owns LA0182 over Bayou Terrebonne?

It is owned by the State Highway Agency.