
The First Street Parkade's helix is in the process of being dismantled on Sept. 2, 2011 in downtown Cedar Rapids (Christoph Trappe/The Gazette)
Demolition crews have begun the removal of the helix portion of the former First Street Parkade.

The First Street Parkade in downtown Cedar Rapids as seen Tuesday, August 19, 2008. (Cliff Jette/The Gazette)
The helix, which extends about 10 feet over a floodwall into the Cedar River, has required some creativity in order to prevent the pieces from falling into the river.
Demolition of the ramp began July 5 and is expected to be completed by Oct. 1. D.W. Zinser Co. of Walford is removing the ramp at a cost of $748,450.