US Bridges

Bayou Gardens Blvd over St. Louis Canal

Fair

Terrebonne Parish, Louisiana · 0.3 West of LA 660 · Structure no. 025529386904481

Built
1995
30 years old
Condition
Fair
inspected May 2023
Type
Culvert
Steel
Length
29 ft
3 main spans
Daily traffic
10,255
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Bayou Gardens Blvd over St. Louis Canal is a steel culvert carrying Bayou Gardens Blvd over St. Louis Canal in Terrebonne Parish, Louisiana. It was built in 1995, so it is 30 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 10,255 vehicles a day, projected to reach 11,280 by 2041. The structure is 29 ft (8.8 m) long and 110 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesBayou Gardens Blvd
CrossesSt. Louis Canal
Location0.3 West of LA 660
RouteCounty Highway 0
CountyTerrebonne Parish
StateLouisiana
Coordinates29.64736, -90.73133
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.4 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span8 ft (2.4 m)
Deck width110 ft (33.5 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,255 (2021)
Projected traffic11,280 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Bayou Gardens Blvd over St. Louis Canal built?

It was built in 1995, making it 30 years old in 2025.

What condition is Bayou Gardens Blvd over St. Louis 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 May 2023.

How much traffic does Bayou Gardens Blvd over St. Louis Canal carry?

About 10,255 vehicles per day (2021 count).

How long is Bayou Gardens Blvd over St. Louis Canal?

The structure is 29 ft (8.8 m) long with a longest span of 8 ft (2.4 m) and a deck 110 ft wide.

Who owns Bayou Gardens Blvd over St. Louis Canal?

It is owned by the Town or Township Highway Agency.