| RMReady Mixed Concrete CO - Plant 1 | Denver | CO | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA LLC. | Dallas | GA | — | ◐ LIKELY ACTIVE |
| RMReady Mix Usa, LLC - Bay Minette | Bay Minette | AL | — | ◐ LIKELY ACTIVE |
| RMReady Mix Usa, LLC Dba Boones Creek Concrete Plant | Johnson City | TN | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA Llc- Jasper Block Plant | Jasper | AL | — | ◐ LIKELY ACTIVE |
| RMReady Mix USA - Racetrack Road Plant | Fort Walton Beach | FL | — | ◐ LIKELY ACTIVE |
| RRRealco Recycling CO. INC. | Jacksonville | FL | — | ◐ LIKELY ACTIVE |
| RCReames&son Construction | Valdosta | GA | — | ◐ LIKELY ACTIVE |
| RERed E Mix LLC | Highland | IL | — | ◐ LIKELY ACTIVE |
| RERed E Mix LLC | Troy | IL | — | ◐ LIKELY ACTIVE |
| RQRedland Quarries Ny Inc-lockport Quarry | Lockport | NY | — | ◐ LIKELY ACTIVE |
| RARedmon Asphalt, INC. | Selmer | TN | — | ◐ LIKELY ACTIVE |
| RFRedwood Falls Ready Mix | Redwood Falls | MN | 1–19 | ◐ LIKELY ACTIVE |
| RCReed Contracting Services | Huntsville | AL | — | ◐ LIKELY ACTIVE |
Reef Innovations, INC. | Sarasota | FL | — | ◐ LIKELY ACTIVE |
| RCReeves Construction Company - Lakeside Asphalt Plant | Greenville | SC | — | ◐ LIKELY ACTIVE |
| RCReeves Construction Company - North Columbia Asphalt Plant | Columbia | SC | — | ◐ LIKELY ACTIVE |
| RCReeves Construction-whitlock Hot Mix Asphalt Plant | Brunswick | GA | — | ◐ LIKELY ACTIVE |
| RCReis Concrete Products INC | Falmouth | KY | — | ◐ LIKELY ACTIVE |
| RCRenfro Construction Company, INC. | Athens | TN | — | ◐ LIKELY ACTIVE |
| RPRe Pierson Materials CORP | Logan Twp | NJ | — | ◐ LIKELY ACTIVE |
| RPR.e. Pierson Materials Vineland Concrete | Vineland | NJ | — | ◐ LIKELY ACTIVE |
| RSRepublic Special Metals | Canton | OH | — | ◐ LIKELY ACTIVE |
| RFRichard F. Kline, INC | Frederick | MD | — | ◐ LIKELY ACTIVE |
Richards-wilbert INC - Roanoke Valley | Salem | VA | — | ◐ LIKELY ACTIVE |
| RBRiegler Blacktop, INC | Florence | KY | — | ◐ LIKELY ACTIVE |
| RRieth-riley (n8295) | Caledonia | MI | — | ◐ LIKELY ACTIVE |
| RMRightmyer Machine Rentals INC | Gaston | NC | — | ◐ LIKELY ACTIVE |
| RMRiley Materials (0339020175) | Norwalk | OH | — | ◐ LIKELY ACTIVE |
| RPRiley Paving INC. | Haw River | NC | — | ◐ LIKELY ACTIVE |
| RMRinker Materials Concrete Pipe Division | Whitestown | IN | — | ◐ LIKELY ACTIVE |
| RMRinker Materials - Grand Junction | Grand Junction | CO | — | ◐ LIKELY ACTIVE |
| RARiver Asphalt | Dagsboro | DE | — | ◐ LIKELY ACTIVE |
| RCRiver City Concrete, INC. - Savannah | Savannah | TN | — | ◐ LIKELY ACTIVE |
| RCRiver City Supply | Macomb | IL | — | ◐ LIKELY ACTIVE |
| RIRiver Ii LLC | Delmar | DE | — | ◐ LIKELY ACTIVE |
| RCRiverside Const Materials/bristol Twp | Bristol | PA | — | ◐ LIKELY ACTIVE |
| RJR J Marshall | Alpine | AL | — | ◐ LIKELY ACTIVE |
| RHRk Hall, LLC. | De Queen | AR | — | ◐ LIKELY ACTIVE |
| RCRmc Carolina Materials Incorporated | Stokesdale | NC | — | ◐ LIKELY ACTIVE |
| RBRoanoke Block - Plant 716 | Roanoke | VA | — | ◐ LIKELY ACTIVE |
| RCRoanoke Cement Company | Winston Salem | NC | — | ◐ LIKELY ACTIVE |
| RRRobertson Ready Mix | Winfield | AL | — | ◐ LIKELY ACTIVE |
| RARockingham Asphalt INC - Harrisonburg | Harrisonburg | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Blacksburg Facility | Blacksburg | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Boyd Tavern Facility | Troy | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Charlottesville Facility | Charlottesville | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Fishersville Facility | Waynesboro | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Garbers Church Facility | Harrisonburg | VA | — | ◐ LIKELY ACTIVE |
| RRRockingham Redi-mix - Lexington Facility | Lexington | VA | — | ◐ LIKELY ACTIVE |