US Bridges

I0010 over Duncan Canal

Fair

Jefferson Parish, Louisiana · 2.7 MI East of I-310 · Structure no. 022604501501902

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
225 ft
9 main spans
Daily traffic
41,695
2021 count
Owner
State
State Highway Agency

About this bridge

I0010 over Duncan Canal is a concrete slab carrying I0010 over Duncan Canal in Jefferson Parish, Louisiana. It was built in 1967, so it is 58 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 6 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 41,695 vehicles a day, roughly 25% of them trucks, projected to reach 45,864 by 2041. The structure is 225 ft (68.6 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI0010
CrossesDuncan Canal
Location2.7 MI East of I-310
RouteInterstate 10
Coordinates30.00946, -90.2448
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating36.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span25 ft (7.6 m)
Deck width56 ft (17 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,695 (2021)
Projected traffic45,864 by 2041
Trucks25%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I0010 over Duncan Canal built?

It was built in 1967, making it 58 years old in 2025.

What condition is I0010 over Duncan 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 July 2024.

How much traffic does I0010 over Duncan Canal carry?

About 41,695 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is I0010 over Duncan Canal?

The structure is 225 ft (68.6 m) long with a longest span of 25 ft (7.6 m) and a deck 56 ft wide.

Who owns I0010 over Duncan Canal?

It is owned by the State Highway Agency.