Construction of Silt Basins; Site Clearance Begins  08-28-2000
Cooperation between DOT environmental staff and the contractor to determine trees to be cut. Pink paint indicates trees to be left, orange paint indicates trees to be removed. 8/28/00
Aggressive erosion control measures on the freshly cleared west valley slope. Silt basin channels are lined with cable-concrete over fabric to prevent erosion.
Installation of the cable-concrete panels to prevent erosion. Silt fence installed to contain erosion along river. Trees that are to be left are marked with pink paint and pink ribbons.
An east-to-west view across the eventual bridge location. Silt basin channel lined with cable-concrete at the west end of the bridge.
Newly planted grass begins to line the silt basin channel. West-to-east view from the eventual western bridge terminus.
Copyright 2000 - 2003, Iowa Department of Transportation. All Rights Reserved.
Web site developed by HNTB Technology Group. HNTB