| SCSoto Concrete | Sun Valley | CA | — | ◐ LIKELY ACTIVE |
| SMSoulbrain Mi | Northville | MI | — | ◐ LIKELY ACTIVE |
| SASouth Alabama Concrete | Troy | AL | — | ◐ LIKELY ACTIVE |
| SCSoutheastern Concrete Company Inc, Plant Number 5 | Hattiesburg | MS | — | ◐ LIKELY ACTIVE |
| SPSoutheastern Pipe & Precast INC | Cantonment | FL | — | ◐ LIKELY ACTIVE |
| SCSouthern Concrete Products INC | Murray | KY | — | ◐ LIKELY ACTIVE |
| SCSouthern Concrete Products of Lexington | Lexington | TN | 1–19 | ◐ LIKELY ACTIVE |
| SCSouthern Concrete Products of Paris | Paris | TN | 20–99 | ◐ LIKELY ACTIVE |
| SISouthland International Trucks | Huntsville | AL | — | ◐ LIKELY ACTIVE |
| SRSouthland Ready Mix Inc, Blue Mountain Facility | Blue Mountain | MS | — | ◐ LIKELY ACTIVE |
| SRSouthland Ready Mix Inc, Corinth Facility | Corinth | MS | — | ◐ LIKELY ACTIVE |
| SCSouthside Concrete Supply LLC | Blairs | VA | — | ◐ LIKELY ACTIVE |
| SPSpray Products | Conshohocken | PA | — | ◐ LIKELY ACTIVE |
| SCSrm - Charleston #706 | Johns Island | SC | — | ◐ LIKELY ACTIVE |
| SCSrm Concrete - Chester | Chesterfield | VA | — | ◐ LIKELY ACTIVE |
| SCSrm Concrete-dinwiddie | Petersburg | VA | — | ◐ LIKELY ACTIVE |
| SGSrm - Goose Creek #707 | Goose Creek | SC | — | ◐ LIKELY ACTIVE |
| SSSr Services LLC | Phoenix | AZ | — | ◐ LIKELY ACTIVE |
| SCStabil Concrete Products, LLC | Sarasota | FL | — | ◐ LIKELY ACTIVE |
| SCStandard Concrete Products - Tampa | Tampa | FL | 20–99 | ◐ LIKELY ACTIVE |
| SRStar Ranch Enterprises INC - Section 2 Farm | South Bay | FL | — | ◐ LIKELY ACTIVE |
| SRState Ready Mix - a Calportland Company | Oxnard | CA | 20–99 | ◐ LIKELY ACTIVE |
| SCStavola Construction Materials INC | Bridgewater | NJ | — | ◐ LIKELY ACTIVE |
| SPSteps Plus, INC. | Syracuse | NY | 1–19 | ◐ LIKELY ACTIVE |
| SISteri-tech, INC. | Salinas | PR | — | ◐ LIKELY ACTIVE |
| SPSti Precast | Leominster | MA | — | ◐ LIKELY ACTIVE |
| SCStone & CO INC Canonsburg Plt | Canonsburg | PA | — | ◐ LIKELY ACTIVE |
| SCStrata Concrete-elgin | Elgin | ND | — | ◐ LIKELY ACTIVE |
| SCStreck Campus | La Vista | NE | 100–499 | ◐ LIKELY ACTIVE |
| SMStrittmatter Materials, LLC Dba D.c. Materials | Hyattsville | MD | — | ◐ LIKELY ACTIVE |
| SRStrong Ready Mix | Abilene | TX | 20–99 | ◐ LIKELY ACTIVE |
| SLSts Logistics & Analytics LLC | Tulsa | OK | — | ◐ LIKELY ACTIVE |
| STS T Wooten Corporation - Plant No 3 | Wilsons Mills | NC | — | ◐ LIKELY ACTIVE |
| STS T Wooten Corporation - Winterville | Winterville | NC | — | ◐ LIKELY ACTIVE |
| SCSummers Concrete Contracting, INC. Plant 450 | Kinston | NC | — | ◐ LIKELY ACTIVE |
| SMSummers-taylor Materials Company Dba Rogersville Concrete Plant | Rogersville | TN | — | ◐ LIKELY ACTIVE |
| SMSummers-taylor Materials Company -rogersville Concrete Plant 2 | Rogersville | TN | — | ◐ LIKELY ACTIVE |
| SPSunbelt Pool Products LLC | Palm Coast | FL | 20–99 | ◐ LIKELY ACTIVE |
| SPSungro Products LLC | Los Angeles | CA | — | ◐ LIKELY ACTIVE |
| SLSunoco LP Stockton Terminal (#1) | Stockton | CA | — | ◐ LIKELY ACTIVE |
| SSSunset Stone | Castle Rock | CO | 20–99 | ◐ LIKELY ACTIVE |
| SISuperflo INC | Marion | VA | — | ◐ LIKELY ACTIVE |
| SPSuperior Paving Corporation - Centreville Plant | Centreville | VA | — | ◐ LIKELY ACTIVE |
| SRSuperior Ready Mix Incorporated | Lebanon | MO | — | ◐ LIKELY ACTIVE |
| SESurface Elements, INC. | Saint Joseph | TN | — | ◐ LIKELY ACTIVE |
| SHSynergy Health Ast LLC | San Diego | CA | — | ◐ LIKELY ACTIVE |
| TITampa International Airport Concrete Batch Plant | Tampa | FL | — | ◐ LIKELY ACTIVE |
| TBTBC Brinadd, LLC. | Houston | TX | 1–19 | ◐ LIKELY ACTIVE |
| TMTcc Materials | Bow | NH | — | ◐ LIKELY ACTIVE |
| TMTcs Materials LLC – Magnolia Suffolk | Suffolk | VA | — | ◐ LIKELY ACTIVE |