| IMIdaho Materials and Construction | Mountain Home | ID | — | ◇ UNVERIFIED |
| IMIdaho Materials & Construction Amyx | Boise | ID | — | ◇ UNVERIFIED |
| ICIdeal Concrete Block Company, INC. | Westford | MA | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix | Roseville | IL | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix - Chariton | Chariton | IA | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC | Dallas City | IL | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC | Stronghurst | IL | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix CO INC | Little York | IL | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix - Fort Madison | Fort Madison | IA | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix Inc-unionville | Unionville | MO | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix - Mt. Pleasant | Mount Pleasant | IA | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix - Ottumwa | Ottumwa | IA | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix - Pella | Pella | IA | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix - Washington | Washington | IA | — | ◇ UNVERIFIED |
| IRIdeal Ready Mix - West Burlington | West Burlington | IA | — | ◇ UNVERIFIED |
| IHIDMA Holdings, LLC | Opa Locka | FL | — | ◇ UNVERIFIED |
| IPIhc/batch Plant-concrete Plant | City of Springdale | AR | — | ◇ UNVERIFIED |
| IRIllini Ready Mix INC | Carbondale | IL | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Monticello | IL | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Bloomington | IL | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Jacksonville | IL | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Peoria | IL | — | ◇ UNVERIFIED |
| IVIllinois Valley Paving CO | Bloomington | IL | — | ◇ UNVERIFIED |
| ICImage Concrete, INC. | Dallas | TX | — | ◇ UNVERIFIED |
| IYImc-pocatello Yellowstone Rea | Park County | WY | — | ◇ UNVERIFIED |
| IIImi Indiana LLC | Marion | IN | — | ◇ UNVERIFIED |
| IIImi Indiana LLC | North Vernon | IN | — | ◇ UNVERIFIED |
| IIImi Indiana LLC New Point 177 | Greensburg | IN | — | ◇ UNVERIFIED |
| IIImi Irving Materials INC | Elizabethtown | KY | — | ◇ UNVERIFIED |
| IKImi Kentucky LLC | Horse Cave | KY | — | ◇ UNVERIFIED |
| IKImi Kentucky LLC - Russell Springs 815 | Russell Springs | KY | — | ◇ UNVERIFIED |
| IPImi Plant 106 | Indianapolis | IN | — | ◇ UNVERIFIED |
| IPImi Plant 117 | Crawfordsville | IN | — | ◇ UNVERIFIED |
| IPImi Plant 149 | Mooresville | IN | — | ◇ UNVERIFIED |
| ISImi South LLC | Henderson | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Brandenburg | Henderson | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Mount Washington 877 | Franklin | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Mount Washington 877 | Walton | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Radcliff 872 | Greensburg | KY | — | ◇ UNVERIFIED |
| ISImi South LLC - Winchester 857 | Radcliff | KY | — | ◇ UNVERIFIED |
| ISImi Southwest LLC - Henderson 515 | Harrodsburg | KY | — | ◇ UNVERIFIED |
| ITImi Tennessee INC | Clarksville | TN | — | ◇ UNVERIFIED |
| ITImi Tennessee INC | Morrison | TN | — | ◇ UNVERIFIED |
| ITImi Tennessee, LLC (spring Hill) | Nashville | TN | — | ◇ UNVERIFIED |
| IRIndependence Ready Mix | Independence | KS | — | ◇ UNVERIFIED |
 Indian Industries INC D/b/a US Weight | Olney | IL | — | ◇ UNVERIFIED |
| ISIndian Springs Road Concrete Plant | Madison | AL | — | ◇ UNVERIFIED |
| IEIngram Enterprises, L.p. | San Angelo | TX | — | ◇ UNVERIFIED |
| IRIngram Readymix Del Rio | Del Rio | TX | — | ◇ UNVERIFIED |
| IRIngram Ready Mix INC. | San Antonio | TX | — | ◇ UNVERIFIED |
