The Jay Cooke State Park will remain closed indefinitely following the historic flood on June 20th, 2012.  Highway 210 that runs through the park is washed away near the bridge and much of the park has been washed away as well.

From the MN DNR:

Jay Cooke State Park closed indefinitely; camping/lodging reservations canceled through October; no reservations taken until further notice

Because State Highway 210 remains closed due to severe flood damage, Jay Cooke State Park in northeastern Minnesota also will remain closed indefinitely, according to the Minnesota Department of Natural Resources (DNR). The highway, which provides the only vehicle access to the park, is impassable due to mudslides and large, washed-out sections.

Damage estimates are not yet available for the park, but the DNR anticipates losing approximately $175,000 in camping and lodging revenue while the park is closed.

Reservations at the park are being canceled through Oct. 31. Full refunds are being issued to customers. No reservations will be taken until further notice.

You can see more photos of the damage at the MN DNR website.