| Service Prequalification Classification | Vendor | State | Phone | Status | DBE Certified | SBP Certified |
|---|---|---|---|---|---|---|
| Design | AECOM GREAT LAKES, INC. | MI | 616-813-7529 | Approved | No | No |
| Design | AYRES ASSOCIATES, INC., OF MICHIGAN | WI | 920-498-1200 | Approved | No | No |
| Design | COLLINS ENGINEERS, INC. | MI | 517-234-4400 | Approved | No | No |
| Design | GPI MICHIGAN, INC. | MI | 443-753-5545 | Approved | No | No |
| Design | GREAT LAKES ENGINEERING GROUP, LLC | MI | 517-363-4400 | Approved | No | No |
