One of the main attractions at Potawatomi State Park near Sturgeon Bay is going to be out of commission for a while.
The observation tower at the park was recently closed after a large crack was discovered on a main support beam.
Potawatomi State Park superintendent Don McKinnon says repairs could take "from a few months up to a year."
The 22-foot beam is made of white oak and specially milled. McKinnon says the tower, built in 1932, is an historic structure so they have to use like wood when they make repairs.
McKinnon says they're sorry they have to close the 75-foot tower but they want to err on the side of caution.
McKinnon says the tower will reopen once the repairs are made and engineers can verify the structural integrity of the tower is secure.