US Bridges

Magnolia DR over Keyhole Canal

Fair

Jefferson Parish, Louisiana · .15 So of W.B. Expwy. · Structure no. 022629536900861

Built
1990
35 years old
Condition
Fair
inspected January 2023
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
—
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Magnolia DR over Keyhole Canal is a concrete culvert carrying Magnolia DR over Keyhole Canal in Jefferson Parish, Louisiana. It was built in 1990, so it is 35 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.

No traffic count is recorded. The structure is 44 ft (13.4 m) long and 42 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesMagnolia DR
CrossesKeyhole Canal
Location.15 So of W.B. Expwy.
RouteCounty Highway 0
CountyJefferson Parish
StateLouisiana
Coordinates29.89522, -90.14465
Functional classUrban 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span10 ft (3 m)
Deck width42 ft (12.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Magnolia DR over Keyhole Canal built?

It was built in 1990, making it 35 years old in 2025.

What condition is Magnolia DR over Keyhole 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 January 2023.

How much traffic does Magnolia DR over Keyhole Canal carry?

No traffic count is recorded for this structure.

How long is Magnolia DR over Keyhole Canal?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m) and a deck 42 ft wide.

Who owns Magnolia DR over Keyhole Canal?

It is owned by the City or Municipal Highway Agency.