| CCClearwater, City of - Master Reuse System | Clearwater | FL | — | ◇ UNVERIFIED |
| CCClearwater Concrete, INC. | Kooskia | ID | — | ◇ UNVERIFIED |
| CPCleburne Plant | Cleburne | TX | — | ◇ UNVERIFIED |
| CBClick Burial Vault | New Philadelphia | OH | — | ◇ UNVERIFIED |
| CGClovis Gunite & Materials INC | Clovis | CA | — | ◇ UNVERIFIED |
| CPCoastal Pit #1 | Gloucester | VA | — | ◇ UNVERIFIED |
| CPColumbia Precast, LLC | Columbia | TN | — | ◇ UNVERIFIED |
| CCComal Concrete Products INC. | New Braunfels | TX | — | ◇ UNVERIFIED |
| CWCombs Wilbert INC | Versailles | KY | — | ◇ UNVERIFIED |
| CPConart Precast, LLC | Cobb | GA | — | ◇ UNVERIFIED |
| CIConcast INC | Wanamingo | MN | — | ◇ UNVERIFIED |
| CIConcast INC | Zumbrota | MN | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant, Gcp5-8461 | Maljamar | NM | — | ◇ UNVERIFIED |
| CBConcrete Buildings Tech INC | Grants Pass | OR | — | ◇ UNVERIFIED |
| CDConcrete Deco, LLC | West Valley City | UT | — | ◇ UNVERIFIED |
| CDConcrete Designs | Morgan Hill | CA | — | ◇ UNVERIFIED |
| CFConcrete Fabricators, INC. | Wheeling | WV | — | ◇ UNVERIFIED |
| CIConcrete Impressions of Florida | Deland | FL | — | ◇ UNVERIFIED |
| CIConcrete Impressions of Florida INC - Precasting Facility | Tampa | FL | — | ◇ UNVERIFIED |
| CIConcrete Industries INC | Green Bay | WI | — | ◇ UNVERIFIED |
| CIConcrete Intelligence Agency LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| CMConcrete & More | Rocheport | MO | — | ◇ UNVERIFIED |
| CNConcrete Norwest Getchell Pit | Lake Stevens | WA | — | ◇ UNVERIFIED |
| CPConcrete Pipe and Precast | Oxford | NC | — | ◇ UNVERIFIED |
| CPConcrete Pipe and Precast LLC - Hanover Plant | Ashland | VA | — | ◇ UNVERIFIED |
| CPConcrete Pipe & Precast - Denver | Denver | NC | — | ◇ UNVERIFIED |
| CPConcrete Pipe & Precast, LLC | Rincon | GA | — | ◇ UNVERIFIED |
| CPConcrete Pipe & Precast LLC - Roanoke Plant | Roanoke | VA | — | ◇ UNVERIFIED |
| CPConcrete Precast Products, INC. | Gainesville | FL | — | ◇ UNVERIFIED |
| CPConcrete Products INC | Tracy | CA | — | ◇ UNVERIFIED |
| CPConcrete Products INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| CPConcrete Products of the Palm Beaches INC. | Riviera Beach | FL | — | ◇ UNVERIFIED |
| CPConcrete Products of Western Washington | Puyallup | WA | — | ◇ UNVERIFIED |
| CSConcrete Safety Systems, LLC | Bethel | PA | — | ◇ UNVERIFIED |
| CSConcrete Shop INC | Vancouver | WA | — | ◇ UNVERIFIED |
| CSConcrete Specialties CO | Franklin Park | IL | — | ◇ UNVERIFIED |
| CSConcrete Specialties CO Hazel Crest | Markham | IL | — | ◇ UNVERIFIED |
| CSConcrete Step Units INC | Scranton | PA | — | ◇ UNVERIFIED |
| CSConcrete Systems, INC. | Hudson | NH | — | ◇ UNVERIFIED |
| CUConcrete Unit Step CO INC | Collinsville | IL | — | ◇ UNVERIFIED |
| CBConecuh Bridge and Engineering, INC. | Troy | AL | — | ◇ UNVERIFIED |
| CCCon-fab California LLC - Shafter Plant | Shafter | CA | — | ◇ UNVERIFIED |
| CMCongress Materials | Euless | TX | — | ◇ UNVERIFIED |
| CGConmat Group INC | Harrisonburg | VA | — | ◇ UNVERIFIED |
| CPConstruction Products, LLC of Tennessee | Jackson | TN | — | ◇ UNVERIFIED |
| CSConstruction Specialty Service, INC Dba Css INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| CCContinental Cast Stone East By Russell, INC. | West Berlin | NJ | — | ◇ UNVERIFIED |
| CCContinental Cast Stone, LLC | Shawnee | KS | — | ◇ UNVERIFIED |
| CPContractors Precast CORP. | Davidsonville | MD | — | ◇ UNVERIFIED |
| CWCooper Wilbert Vault CO | Barrington | NJ | — | ◇ UNVERIFIED |
