US Bridges

LA0001 over CO Canal Lockport

Poor

Lafourche Parish, Louisiana · .1 MI North of LA 655 · Structure no. 022900640601401

Built
1959
66 years old
Condition
Poor
inspected June 2024
Type
Movable - Lift
Steel
Length
410 ft
1 main span
Daily traffic
9,831
2021 count
Owner
State
State Highway Agency

About this bridge

LA0001 over CO Canal Lockport is a steel movable - lift carrying LA0001 over CO Canal Lockport in Lafourche Parish, Louisiana. It was built in 1959, so it is 66 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.

It carries about 9,831 vehicles a day, roughly 11% of them trucks, projected to reach 10,814 by 2041. The structure is 410 ft (125 m) long and 39 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesLA0001
CrossesCO Canal Lockport
Location.1 MI North of LA 655
RouteState Highway 1
Coordinates29.64445, -90.54436
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckOpen grating
Main spans1 (+10 approach)
Design loadHS 20
Structure length410 ft (125 m)
Longest span160 ft (48.8 m)
Deck width39 ft (11.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deck17 ft (5.3 m)

Traffic and service

Average daily traffic9,831 (2021)
Projected traffic10,814 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0001 over CO Canal Lockport built?

It was built in 1959, making it 66 years old in 2025.

What condition is LA0001 over CO Canal Lockport 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 June 2024.

How much traffic does LA0001 over CO Canal Lockport carry?

About 9,831 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is LA0001 over CO Canal Lockport?

The structure is 410 ft (125 m) long with a longest span of 160 ft (48.8 m) and a deck 39 ft wide.

Who owns LA0001 over CO Canal Lockport?

It is owned by the State Highway Agency.