A nearly $600,000 project to replace the four ramps at the Bonnabel Boat Launch on Lake Pontchartrain in Metairie is scheduled to take the busy launch out of commission from Oct. 13 until about February, the Jefferson Parish Recreation Department said Thursday.

The parish is paying Ashley Savarino Unlimited Construction LLC $577,219 to remove the existing concrete ramps at the launch on the north end of Bonnabel Boulevard and lay down new ones.

The ramps have been in poor shape for some time. One has been completely out of use, another could handle only small craft and the remaining two have deteriorated from heavy use, prompting boaters to repeatedly call for their replacement.

Crews also will be driving timber piles and laying down rip-rap — loose stones meant to break waves — along the shore, according to documents outlining the project.

To help fund the project, parish officials struck an agreement with the U.S. Fish and Wildlife Service to secure up to $350,000 in federal aid through the Sport Fish Restoration Act.

Jefferson Parish put the project out to bid May 13, and Ashley Savarino won the contract from the Parish Council on Sept. 23 after submitting the low bid.

While the Bonnabel launch is closed, area boaters can access Lake Pontchartrain from launches at the Seabrook Bridge — connecting Leon C. Simon Drive and Hayne Boulevard, just east of the University of New Orleans campus — and at the north end of Williams Boulevard in Kenner.