Small unsteady spoil banks/ levees can be built up to form a 'bowl' shape. Then with the help of dredges, soil can be pumped in and marsh grasses planted. Once the marsh grasses build up, levees will begin to collapse creating a new vegetated marsh area.
Worden is a village in Madison County, Illinois, United States.
Willett Hofmann & Associates in New Boston Township, Mercer County, Illinois. Â· September 1, 2016 at 9:02pm Â· Â·. This unique bridge designed by WHA using two railroad flat cars met New Boston Township's request for an inexpensive alternative for the replacement of a closed bridge.