Crossing the Mississippi River in the New Orleans area will be a little tougher Saturday and Sunday

That’s because the Huey P. Long Bridge, which crosses the river in Jefferson Parish, will be closed to traffic.

The 48-hour closure is necessary to pour concrete for new vehicle lanes on both the eastbound and westbound sides of the bridge.

Bambi Hall, a spokeswoman for the state Department of Transportation and Development, said construction will be completed in summer 2013. The bridge, built in the 1930s, has been undergoing a massive rebuild.

Motorists can use the Crescent City Connection in New Orleans or the Hale Boggs Bridge in St. Charles Parish, as well as various ferries, to cross the river.