| SCShilling Const. Gencor(asphalt Plant) (portable) | Manhattan | KS | — | ◐ LIKELY ACTIVE |
| SCShilling Const. - Manhattan | Manhattan | KS | — | ◐ LIKELY ACTIVE |
| SPShockey Precast - Winchester Facility | Winchester | VA | — | ◐ LIKELY ACTIVE |
| SAShook Asphalt CO. INC. | Greenville | MI | — | ◐ LIKELY ACTIVE |
| SCShope Concrete LLC | Puyallup | WA | — | ◐ LIKELY ACTIVE |
| SASika Albuquerque | Albuquerque | NM | — | ◐ LIKELY ACTIVE |
| SCSilvi Concrete Morrisville Plt | Fairless Hills | PA | — | ◐ LIKELY ACTIVE |
| SCSilvi Concrete of South Plainfield INC. | South Plainfield | NJ | — | ◐ LIKELY ACTIVE |
| SCSilvi Concrete South - Apex Plant | Apex | NC | — | ◐ LIKELY ACTIVE |
| SCSimpson Construction Materials LLC Valley Park | Valley Park | MO | — | ◐ LIKELY ACTIVE |
| SBSims Bark CO of Georgia LLC | Bowman | SC | — | ◐ LIKELY ACTIVE |
| SOSitemix of Alabama | Dadeville | AL | — | ◐ LIKELY ACTIVE |
| SMSJB Masonry - Precast | Willmar | MN | 1–19 | ◐ LIKELY ACTIVE |
| SRSkagit Ready Mix Mcfarland Road | Mount Vernon | WA | — | ◐ LIKELY ACTIVE |
| SCSloan Construction:pacolet | Pacolet | SC | — | ◐ LIKELY ACTIVE |
| SPSlurry Pavers, INC. | Morehead City | NC | — | ◐ LIKELY ACTIVE |
| SBSmall Batch Concrete LLC | Louisville | KY | — | ◐ LIKELY ACTIVE |
Smith-Midland Corporation (South Carolina) | Hopkins | SC | 20–99 | ◐ LIKELY ACTIVE |
| SPSmith Paving Incorporated | Grottoes | VA | — | ◐ LIKELY ACTIVE |
| SPSmith Paving & Ready Mix | Soda Springs | ID | — | ◐ LIKELY ACTIVE |
| SMSmith's Materials - Concrete Batch Plant | Dolores 2.3 Mi. Sw of | CO | — | ◐ LIKELY ACTIVE |
| SRSmith's Ready Mix, INC | Arkadelphia | AR | — | ◐ LIKELY ACTIVE |
| SPS&m Paving CO | Nauvoo | AL | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix | Smyrna | TN | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix - Arvada Mix Plant | Arvada Area | CO | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Batch Plant - Baldwin | Baldwin | FL | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Batch Plant Sjc | Saint Augustine | FL | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Cocoa Cbp | Cocoa | FL | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete, LLC | Madison | AL | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete, LLC | South Pittsburg | TN | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete, LLC | Hermitage | TN | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete LLC Dba Crossville Plant | Crossville | TN | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete LLC - Plant 260 | Bowling Green | KY | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete LLC - Plant 261 | Franklin | KY | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete, LLC - Spring Hill Plant #25 B | Spring Hill | TN | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete LLC - Srm Plant #123 | Lloyd | FL | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete, LLC - Srm Plant #15450 Alico | Fort Myers | FL | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Concrete LLC - Srm Plant #15470 Alico | Fort Myers | FL | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix, LLC | Winchester | TN | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix, Plant 19 | Centerville | TN | — | ◐ LIKELY ACTIVE |
| SRSmyrna Ready Mix Plant #203 | Brooks | KY | — | ◐ LIKELY ACTIVE |
| SESnell, E.r., Contractor, INC. | Norcross | GA | — | ◐ LIKELY ACTIVE |
| SRSoil Retention Products INC | Perris | CA | 20–99 | ◐ LIKELY ACTIVE |
| SCSoto Concrete | Sun Valley | CA | — | ◐ LIKELY ACTIVE |
| SASouth Alabama Concrete | Troy | AL | — | ◐ LIKELY ACTIVE |
| SASouth Atlanta Asphalt Plant | Atlanta | GA | — | ◐ LIKELY ACTIVE |
| SCSoutheastern Concrete Company Inc, Plant Number 5 | Hattiesburg | MS | — | ◐ LIKELY ACTIVE |
| SCSoutheastern Concrete Products Columbia | Columbia | SC | 1–19 | ◐ LIKELY ACTIVE |
| SPSoutheastern Pipe & Precast INC | Cantonment | FL | — | ◐ LIKELY ACTIVE |
| SCSouthern Concrete Products INC | Murray | KY | — | ◐ LIKELY ACTIVE |