Tuesday morning's chilly conditions indirectly caused a change in plans for the Coast Guard Cutter Mobile Bay.
The ship was delayed about an hour because the Oregon Street Bridge wouldn't open.
Kim Rudat, Wisconsin Department of Transportation regional communications manager says the bridge froze shut.
"Apparently overnight it froze, even though there's some heaters on there, and they had to work it a little bit to break it loose," says Rudat.
Lieutenant Commander John Stone, commanding officer of the Mobile Bay, says the ship used the extra time to give some of the junior officers some time at the wheel.
"We delayed a little more because the Selvick tugs were moving one of the ships at Bay Ship to a different berth and we wanted to make sure they had plenty of room to get the work done they needed before we came through," says Stone.
Stone says much of their Tuesday was spent doing preventative ice breaking to clear a track for four to five more commercial carriers scheduled to make their way in to Bay Shipbuilding to lay up.
Temperatures dropped into the single digits above zero early Tuesday.