US Bridges

Canal Blvd over Lafourche Bayou

FairPosted for load

Lafourche Parish, Louisiana · 1 0003 Log MI from I · Structure no. 022929479904911

Built
1966
59 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
189 ft
10 main spans
Daily traffic
8,737
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Canal Blvd over Lafourche Bayou is a concrete slab carrying Canal Blvd over Lafourche Bayou in Lafourche Parish, Louisiana. It was built in 1966, so it is 59 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 8,737 vehicles a day, roughly 12% of them trucks, projected to reach 9,610 by 2039. The structure is 189 ft (57.6 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCanal Blvd
CrossesLafourche Bayou
Location1 0003 Log MI from I
RouteCounty Highway 0
CountyLafourche Parish
StateLouisiana
Coordinates29.79961, -90.81797
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating23.3 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans10
Design loadHS 20
Structure length189 ft (57.6 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,737 (2019)
Projected traffic9,610 by 2039
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$597,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Canal Blvd over Lafourche Bayou built?

It was built in 1966, making it 59 years old in 2025.

What condition is Canal Blvd over Lafourche Bayou 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 June 2023.

How much traffic does Canal Blvd over Lafourche Bayou carry?

About 8,737 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is Canal Blvd over Lafourche Bayou?

The structure is 189 ft (57.6 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Canal Blvd over Lafourche Bayou?

It is owned by the City or Municipal Highway Agency.