Environmental Abrasives Warehouse CO. | Boise | — | ● ACTIVE |
| IMIcco Middelton | Caldwell | 20–99 | ◐ LIKELY ACTIVE |
| ICInterstate Concrete and Asphalt | Rathdrum | 100–499 | ◐ LIKELY ACTIVE |
| LFLucky Friday Mine | Mullan | — | ◐ LIKELY ACTIVE |
| BCBasalite Concrete Products | Meridian | — | ◇ UNVERIFIED |
| CCClements Concrete Joplin Road Facility | Boise | — | ◇ UNVERIFIED |
| KRKnife River | Nampa | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Idaho Falls | — | ◇ UNVERIFIED |
| MMMemorial Monuments Meridian | Meridian | 20–99 | ◐ LIKELY ACTIVE |
| ARAmericrete Ready-mix Concrete Dba G & B Redi-mix 00384 | Portable | — | ◐ LIKELY ACTIVE |
| CCClearwater Concrete INC 00379 | Portable | — | ◐ LIKELY ACTIVE |
| WRWalters Ready Mix INC | Rexburg | — | ◐ LIKELY ACTIVE |
| AGAsh Grove Cement | Inkom | — | ◇ UNVERIFIED |
| CCClearwater Concrete Kooskia Facility | Kamiah | — | ◇ UNVERIFIED |
| CPConcrete Placing CO INC 00099 | Boise | — | ◇ UNVERIFIED |
| CPCranny Pit | Idaho Falls | — | ◇ UNVERIFIED |
| FSForterra Structural Precast Caldwell | Caldwell | — | ◇ UNVERIFIED |
| GAG and B Redi-mix Nampa | Nampa | — | ◇ UNVERIFIED |
| HTHandy Truck Line INC - Meridian | Meridian | — | ◇ UNVERIFIED |
| HPHelco Portable Concrete Plant (donnelly) 302231 | Donnelly | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company | Boise | — | ◇ UNVERIFIED |
| ICIdaho Concrete Company Site | Caldwell | — | ◇ UNVERIFIED |
| IMIdaho Materials and Construction | Eagle | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt | Sandpoint | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt - Coeur Dalene Facility | Coeur D Alene | — | ◇ UNVERIFIED |
| ICInterstate Concrete and Asphalt - Freeman Pit Batch Plant | Post Falls | — | ◇ UNVERIFIED |
| ICInterstate Concrete & Asphalt Post Falls | Post Falls | — | ◇ UNVERIFIED |
| JRJerome Redi-mix | Jerome | — | ◇ UNVERIFIED |
| KRKnife River Corporation - Mountain West - Cascade | Cascade | — | ◇ UNVERIFIED |
| MFMaddens Facility | Caldwell | — | ◇ UNVERIFIED |
| MRMaddens Ready Mix | Caldwell | — | ◇ UNVERIFIED |
| MDMasco Dba Knife River 00386 | Portable | — | ◇ UNVERIFIED |
| MCMobile Concrete of Idaho | Boise | — | ◇ UNVERIFIED |
| MCMobile Concrete of Idaho 00544 | Meridian | — | ◇ UNVERIFIED |
| RCRvier City Redemix | Salmon | — | ◇ UNVERIFIED |
| SCSunroc Corporation Badger Concrete Batch Plant | Boise | — | ◇ UNVERIFIED |
| TCTriple C Concrete | Twin Falls | — | ◇ UNVERIFIED |
| AMAdvanced Marble and Granite, INC. | Meridian | 20–99 | ◐ LIKELY ACTIVE |
| BBBasalite - Boise | Meridian | 20–99 | ◐ LIKELY ACTIVE |
| BRB.f. Redi-mix, INC. | Bonners Ferry | — | ◐ LIKELY ACTIVE |
| BCBOIST - Contech Engineered Solutions LLC | Caldwell | 20–99 | ◐ LIKELY ACTIVE |
| BCBurns Concrete INC | Idaho Falls | — | ◐ LIKELY ACTIVE |
| CCaldwell-Maddens | Caldwell | 100–499 | ◐ LIKELY ACTIVE |
| CRCDA Redi Mix & Precast | Post Falls | 100–499 | ◐ LIKELY ACTIVE |
| CCClearwater Concrete, INC. | Cottonwood | — | ◐ LIKELY ACTIVE |
| CNCXT Nampa Concrete Products | Nampa | 100–499 | ◐ LIKELY ACTIVE |
| DRDahle's Red-e-mix INC | Salmon | — | ◐ LIKELY ACTIVE |
| DRDixie River Caldwell Idaho | Caldwell | 1–19 | ◐ LIKELY ACTIVE |
| EREagle Ready Mix | Eagle | 20–99 | ◐ LIKELY ACTIVE |
| FNFlamingo Nampa Idaho | Nampa | 20–99 | ◐ LIKELY ACTIVE |