US Bridges

LA0660 over Drain Canal

Fair

Terrebonne Parish, Louisiana · 1.0 Mi. West of LA 3087 · Structure no. 025500000020423

Built
2010
15 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
134 ft
7 main spans
Daily traffic
10,321
2021 count
Owner
State
State Highway Agency

About this bridge

LA0660 over Drain Canal is a concrete slab carrying LA0660 over Drain Canal in Terrebonne Parish, Louisiana. It was built in 2010, so it is 15 years old, younger 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 6 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 10,321 vehicles a day, roughly 11% of them trucks, projected to reach 11,353 by 2041. The structure is 134 ft (40.8 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLA0660
CrossesDrain Canal
Location1.0 Mi. West of LA 3087
RouteState Highway 660
CountyTerrebonne Parish
StateLouisiana
Coordinates29.6169, -90.6806
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating62.2 US tons
Inventory rating48.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span19 ft (5.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,321 (2021)
Projected traffic11,353 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 LA0660 over Drain Canal built?

It was built in 2010, making it 15 years old in 2025.

What condition is LA0660 over Drain Canal 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 March 2023.

How much traffic does LA0660 over Drain Canal carry?

About 10,321 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0660 over Drain Canal?

The structure is 134 ft (40.8 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns LA0660 over Drain Canal?

It is owned by the State Highway Agency.