US Bridges

LA0023 over I C Waterway

Fair

Plaquemines Parish, Louisiana · .2 MI South of LA 3017 · Structure no. 023800620200432

Built
1968
57 years old
Condition
Fair
inspected August 2023
Type
Movable - Lift
Steel
Length
2,558 ft
1 main span
Daily traffic
29,088
2021 count
Owner
State
State Highway Agency

About this bridge

LA0023 over I C Waterway is a steel movable - lift carrying LA0023 over I C Waterway in Plaquemines Parish, Louisiana. It was built in 1968, so it is 57 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.

It carries about 29,088 vehicles a day, roughly 10% of them trucks, projected to reach 31,996 by 2041. The structure is 2,558 ft (779.7 m) long and 34 ft wide.

Location

Open in Google Maps
CarriesLA0023
CrossesI C Waterway
Location.2 MI South of LA 3017
RouteState Highway 23
CountyPlaquemines Parish
StateLouisiana
Coordinates29.8695, -90.0058
Functional classUrban Other Principal 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.
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 protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating40 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckOpen grating
Main spans1 (+49 approach)
Design loadHS 20
Structure length2,558 ft (779.7 m)
Longest span150 ft (45.7 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic29,088 (2021)
Projected traffic31,996 by 2041
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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$10 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was LA0023 over I C Waterway built?

It was built in 1968, making it 57 years old in 2025.

What condition is LA0023 over I C Waterway 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 August 2023.

How much traffic does LA0023 over I C Waterway carry?

About 29,088 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is LA0023 over I C Waterway?

The structure is 2,558 ft (779.7 m) long with a longest span of 150 ft (45.7 m) and a deck 34 ft wide.

Who owns LA0023 over I C Waterway?

It is owned by the State Highway Agency.