| # | Company name | Role | # of Projects |
|---|---|---|---|
| 1 | A2z Construction | concrete supplier | 0 |
| 2 | AA Boos & Sons | concrete supplier | 0 |
| 3 | Aalborg Portland A/S | concrete supplier | 0 |
| 4 | A.A. Pittman & Sons Concrete | concrete supplier | 5 |
| 5 | Abbey Paving Co Inc | concrete supplier | 1 |
| 6 | Abc Contractors | concrete supplier | 1 |
| 7 | Abetong AB | concrete supplier | 1 |
| 8 | AB Färdig Betong | concrete supplier | 3 |
| 9 | Accent Construction Company | concrete supplier | 0 |
| 10 | Accord Industries | concrete supplier | 1 |
| 11 | Accurate Concrete Cutting Inc. | concrete supplier | 1 |
| 12 | Acme Construction | concrete supplier | 0 |
| 13 | Acme Constructors | concrete supplier | 1 |
| 14 | A.c Miller Concrete | concrete supplier | 1 |
| 15 | Active Concrete | concrete supplier | 1 |
| 16 | Addison-harrington Inc | concrete supplier | 2 |
| 17 | Adjustable Forms/gateway/perini (jt Venture | concrete supplier | 0 |
| 18 | Advance Ready Mix Concrete | concrete supplier | 2 |
| 19 | A E Berg Company Inc | concrete supplier | 1 |
| 20 | Aero Contracting | concrete supplier | 1 |