US Bridges

LA0182 over Alligator Bayou Relief

Good

Assumption Parish, Louisiana · 1.3 Miles W of LA 662 · Structure no. 610400050202481

Built
2006
19 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete
Length
118 ft
6 main spans
Daily traffic
3,905
2021 count
Owner
State
State Highway Agency

About this bridge

LA0182 over Alligator Bayou Relief is a concrete slab carrying LA0182 over Alligator Bayou Relief in Assumption Parish, Louisiana. It was built in 2006, so it is 19 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,905 vehicles a day, roughly 18% of them trucks, projected to reach 4,295 by 2041. The structure is 118 ft (36 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLA0182
CrossesAlligator Bayou Relief
Location1.3 Miles W of LA 662
RouteU.S. Route 182
Coordinates29.66353, -91.064
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length118 ft (36 m)
Longest span20 ft (6 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,905 (2021)
Projected traffic4,295 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA0182 over Alligator Bayou Relief built?

It was built in 2006, making it 19 years old in 2025.

What condition is LA0182 over Alligator Bayou Relief in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does LA0182 over Alligator Bayou Relief carry?

About 3,905 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is LA0182 over Alligator Bayou Relief?

The structure is 118 ft (36 m) long with a longest span of 20 ft (6 m) and a deck 46 ft wide.

Who owns LA0182 over Alligator Bayou Relief?

It is owned by the State Highway Agency.