IIW

Project Category

Citywide Storm Sewer Mapping & Study

IIW is performing a Citywide Storm Sewer Mapping & Study for the City of Peosta, Iowa in an effort to improve the storm water conveyance system.... > READ MORE

Water Street over Wapsipinicon River

IIW’s work on the Water Street bridge over the Wapsipinicon River in Quasqueton, Iowa, began with the evaluation of a series of rehabilitation options. IIW helped city and county officials understand... > READ MORE

North Cascade Road over the South Fork Catfish Creek

IIW led the emergency replacement of the North Cascade bridge after it was washed out by a summer storm in Dubuque, Iowa. IIW’s engineering team conducted a hydrologic and hydraulic analysis to determine... > READ MORE

Lansing Wastewater Pumping & Treatment Facility

Using the technical expertise of IIW's engineering team, the City of Lansing upgraded its wastewater treatment system with a newly constructed extended aeration treatment plant (AeroMod) that’s also... > READ MORE

11th Street East Rehabilitation

When the crippling pavement of a thoroughfare in Dewitt, Iowa required fast action, IIW responded with completing the design and receiving the necessary approvals within three months.... > READ MORE