| A.R. Martin Construction, L.L. | Stonefort,IL 62987 | (618) 841-8612 | |
| Widman Construction, Inc. | Godfrey,IL 62035 | (618) 466-1036 | (618) 466-7984 |
| Keller Construction, Inc. | Glen Carbon,IL 62034-2915 | (618) 656-0033 | (618) 656-2310 |
| Fred M. Luth & Sons, Inc. | Saint Louis,MO 63110 | (314) 771-3892 | (314) 771-4486 |
| Brewster Companies, Inc. | Maryville,IL 62062 | (618) 344-4468 | (618) 223-1887 |
| William Charles Construction C | Springfield,IL 62702 | (217) 306-5252 | (786) 270-4428 |
| E & A Excavating and Services, | Worden,IL 62097 | (217) 320-8614 | |
| Keeley & Sons, Inc. | East Saint Louis,IL 62201 | (618) 271-7470 | (618) 271-0830 |
| Surmeier & Surmeier, Inc. | Mascoutah,IL 62258 | (618) 233-1222 | (618) 566-2556 |
| Roadworks, L.L.C. | Marion,IL 62959 | (618) 922-8515 | (844) 842-8401 |
| RCS Construction, Inc. | East Alton,IL 62024 | (618) 254-3816 | (618) 254-3841 |
| Lake Contracting, Inc. | Addieville,IL 62214 | (618) 824-6522 | (618) 824-6521 |
| Samron Midwest Contracting, In | Murphysboro,IL 62966 | (618) 687-5500 | (618) 687-5153 |
| Luhr Crosby, L.L.C. | Columbia,IL 62236-0050 | (618) 281-4106 | (618) 281-4288 |
| Millstone Weber, L.L.C. | Saint Charles,MO 63301 | (618) 231-6330 | |
| Kaskaskia Engineering Group, L | Belleville,IL 62220 | (618) 233-5877 | (618) 233-5977 |
| Christ Brothers Asphalt, Inc. | Lebanon,IL 62254-1720 | (618) 537-6174 | (618) 537-6199 |
| Kinney Contractors, Inc. | Raymond,IL 62560 | (217) 229-3322 | (217) 229-3609 |
| Baxmeyer Construction, Inc. | Waterloo,IL 62298 | (618) 939-3000 | (618) 939-4299 |
| Ramirez Diversified Services, | Belleville,IL 62220 | (618) 416-5085 | |
| KCI Construction Company | St. Louis,MO 63123-7245 | (314) 894-8888 | (314) 894-7418 |
| Bloomsdale Excavating Co., Inc | Bloomsdale,MO 63627 | (573) 483-2564 | (573) 483-9474 |