US Bridges

W Napolean over Suburban Canal

Good

Jefferson Parish, Louisiana · .3 Miles East of Clearvie · Structure no. 022600000000076

Built
2003
22 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
21,460
2008 count
Owner
County
County Highway Agency

About this bridge

W Napolean over Suburban Canal is a concrete culvert carrying W Napolean over Suburban Canal in Jefferson Parish, Louisiana. It was built in 2003, so it is 22 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 21,460 vehicles a day, projected to reach 23,606 by 2028. The structure is 24 ft (7.3 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesW Napolean
CrossesSuburban Canal
Location.3 Miles East of Clearvie
RouteCounty Highway 0
Coordinates29.99338, -90.17637
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating42.9 US tons
Inventory rating32.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width35 ft (10.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,460 (2008)
Projected traffic23,606 by 2028
Trucks—
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W Napolean over Suburban Canal built?

It was built in 2003, making it 22 years old in 2025.

What condition is W Napolean over Suburban Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does W Napolean over Suburban Canal carry?

About 21,460 vehicles per day (2008 count).

How long is W Napolean over Suburban Canal?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 35 ft wide.

Who owns W Napolean over Suburban Canal?

It is owned by the County Highway Agency.