| Advanced Welding LTD |
| Airy's Inc. |
| Aldridge Electric, Inc. |
| Alpha Construction |
| Alsterda Cartage & Construction Company, Inc. |
| Archon Construction |
| Barone Contracting, LLC |
| Bell Land Improvement, Inc. |
| Berger Excavating |
| Bolder Contractors, Inc. |
| Bull's-Eye Boring, Inc. |
| C.J. Erickson Plumbing |
| Cabo Construction Corp |
| Calumet City Plumbing |
| Civil Contractor & Engineers |
| Concept Plumbing |
| Contractors Power & Light Co. |
| Curran Contracting Co. |
| Di Paolo Company |
| DiMeo Brothers Inc |
| DNO Services, Inc. |
| Doherty, Giannini & Reitz |
| Electric Conduit Construction Co. |
| G.A. Rich & Sons, Inc. |
| George Kennedy Construction Co. |
| Glenbrook Excavating & Concrete, Inc. |
| H & H electirc Company |
| Henkels & McCoy |
| Henkels & McCoy |
| Hi-Way Leasing |
| Hoerr Construction, Inc. |
| Holiday Sewer and Water |
| Humir Construction Inc. |
| IHC Construction Companies |
| IHC Construction Companies |
| Insituform Technologies USA, LLC an Aegion Corp. |
| INTREN, Inc. |
| J&T Services Inc |
| J.A.C.K. Contractor Services, Inc. |
| J.P. Hopkins |
| J.S. Alberico Construction Co., Inc. |
| Jay Dee Contractors |
| Joel Kennedy Construction |
| John Burns Construction |
| John Neri Construction Co. Inc. |
| Joseph J. Henderson & Son, Inc. |
| JSR Enterprises |
| Kankakee Valley Construction Co. |
| Kenny / Shea, A Joint Venture |
| Kenny Construction Company |
| Kenny Construction Company |
| Knowles Construction |
| L. J. Keefe Company |
| Len Cox & Sons Excavating |
| Leyden Electric, Inc. |
| Lorig Construction Compay |
| LoVerde Construction Company, Inc. |
| Mauro Sewer Construction |
| McDonagh Demolition, Inc. |
| Meccon Industries, Inc. |
| Michael Pontarelli, Inc. |
| Michels Tunneling |
| Mid America Underground LLC |
| Midwest Mole, Inc. |
| Miller The Driller |
| Montemayor Construction |
| MQ Sewer & Water Contractors, Inc. |
| Nash Bros. Construction Co. |
| Neri Brothers Construction, Inc. |
| Neslund & Associates, Inc. |
| Nicor |
| Olthoff, Inc. |
| Pan Oceanic Engineering |
| Pat McNally Construction |
| Patnick Construction, Inc. |
| Perdel Contracting Corporation |
| PirTano Construction |
| Prinmar Corporation |
| Procision Boring, Inc. |
| Qualco Enterprises |
| R.A. Mancini |
| R.W. Collins Company |
| Ray Edwards Contractors |
| Reliable Contracting & Equipment Co. |
| Richards Excavating |
| Rock & Co. |
| Roy Strom Co. |
| Ryan Incorporated Central |
| S.A. Healy Company |
| Scully, Inc. |
| Sheridan Plumbing & Sewer, Inc. |
| Stark & Son Trenching |
| Stark Excavating, Inc. |
| Steve Spiess Construction |
| Straightline Excavating, Inc. |
| Vahey Construction |
| Visu-Sewer of Illinois |
| Walker Excavating Co., Inc. |
| Walsh Construction Co |
| Wiegand & Storrer, Inc. |
Contractor Members
