- A.A. Boos & Sons
- Anderzack-Pitzen Construction, Inc.
- Black Swamp Steel
- Bryan Excavating, LLC
- Build The 419
- Crestline Paving & Excavating Co., Inc.
- Delventhal Company
- Duffey Concrete Cutting & Drilling Company, LLC
- E.S. Wagner Co.
- Ebony Construction Co., Inc.
- Flatrock Bridge Group
- Foundation Steel, LLC
- Geddis Paving and Excavating Inc.
- Geo. Gradel Co.
- Gerken Paving, Inc.
- Kirk Bros Company
- Kokosing Industrial
- Lathrop Company
- Midwest Mole, Inc.
- Miller Bros. Const., Inc.
- Miller Cable Co.
- Mosser Construction
- OCP Contractors
- Ohio/Michigan Concrete Sawing and Drilling
- Pavement Maintenance Systems, Inc.
- R. J. Runge Company, Inc.
- Rudolph Libbe Group
- The Dotson Company
- Trisco Systems
- Tuttle Construction Company
- Valley Interior Systems
- Ward Construction Co.