| Company |
Location |
| A.G. Wassenaar, Inc. |
Denver, CO |
| American Engineering Testing, Inc. |
St. Paul, MN |
| Burns & McDonnell |
Oak Brook, IL |
| Calhoun-Burns and Associates |
Des Moines, IA |
| Cedar Corporation |
Menomonie, WI |
| Christopher B. Burke Engineering, Ltd. |
Rosemont, IL |
| Ciorba Group |
Chicago, IL |
| City of Cedar Rapids |
Cedar Rapids, IA |
| Civiltech Engineering, Inc. |
Chicago, IL |
| Clapsaddle-Garber Associates |
Marshalltown, IA |
| CM Lavoie and Associates |
Downers Grove, IL |
| Cornerstone Engineering |
Bakersfield, CA |
| Des Moines Water Works |
Des Moines, IA |
| Earth Tech |
Waterloo, IA |
| Engineering Design Services |
Des Moines, IA |
| Engineering Enterprises, Inc. |
Chicago, IL |
| Fehr-Graham |
Freeport, IL |
| Hall & Hall Engineers |
Cedar Rapids, IA |
| Hampton, Lenzini & Renwick, Inc. |
Elgin, IL |
| HBK Engineering |
Chicago, IL |
| HNTB |
Kansas City, MO |
| Horner & Shifrin, Inc. |
St. Louis, MO |
| Howard R. Green |
Moline, IL |
| IG Consulting |
Wheeling, IL |
| Iowa Dept. of Natural Resources |
Des Moines, IA |
| IPC, Inc. |
Des Moines, IA |
| J.H. Findorff |
Milwaukee, WI |
| Johnston Burkholder Associates |
Kansas City, MO |
| JP-SE, LLC |
Des Moines, IA |
| KCN Engineering |
Spencer, IA |
| Kiewit Construction Company |
Chicago, IL |
| Kirkham Michael Consulting Engineers |
Denver, CO |
| Knight Infrastructure |
Chicago, IL |
| Lorig Construction |
Des Plaines, IL |
| Manhard Consulting |
Chicago, IL |
| Marsh Advantage America |
Iowa City, IA |
| McAfee Engineers & Associates |
Leavenworth, KS |
| McClure Engineering Company |
Coralville, IA |
| McIntosh & Associates |
Bakersfield, CA |
| MMS Consultants |
Iowa City, IA |
| Monroe & Newell Engineers, Inc. |
Denver, CO |
| Oates Associates |
Collinsville, IL |
| NNW, Inc. |
Iowa City, IA |
| PCL Construction Leaders |
Minneapolis, MN & Seattle, WA |
| RBF Consulting |
Irvine, CA |
| RJN Group |
Wheaton, IL |
| Sega, Inc. |
Stilwell, KS |
| Shive-Hattery, Inc. |
Cedar Rapids, IA & Iowa City, IA |
| Shoemaker & Haaland |
Coralville, IA |
| Snyder Associates |
Cedar Rapids, IA |
| Stanley Consultants |
Muscatine, IA |
| Strand Associates, Inc. |
Louisville, KY |
| Spaceco, Inc. |
Rosemont, IL |
| URS Corporation |
Omaha, NE |
| US Army Corps of Engineers |
Rock Island, IL |
| USDA |
|
| V3 Companies |
Woodridge, IL |
| Veenstra & Kimm, Inc. |
Coralville, IA |
| Village of Carol Stream |
Carol Stream, IL |
| Walsh Construction |
Chicago, IL |
| Webcor Builders |
Los Angeles, CA |
| White-Daters & Associates |
Little Rock, AR |
| Woolpert, Inc. |
Oakbrook Terrace, IL |
| Zachry Construction Corporation |
San Antonio, TX |
