| Steve Santa Cruz | President | Surface Tech |
| Ernesto Santillan | Area Sales Manager | Ergon Asphalt & Emulsions, Inc. |
| Erick Santillan | QC Manager - Fort Worth | Texas Materials North Texas Area |
| Ken Sapien | Executive Vice President | Beyond Engineering and Testing, LLC |
| Sue Sasse | Account Manager | Nouryon |
| Eric Sattler | Project Engineer | RS&H |
| Doug Satz | Plant Manager | Anderson Columbia Co., Inc. |
| Rick Schleider | Sales | Wright Asphalt Products Co. |
| Burl Schmitz | Division Manager | Vulcan Materials Company |
| Danny Schnyder | Sales Manager | Texas Materials Gulf Coast Area |
| Brian Schoenemann | Senior Construction Manager | IDCUS |
| Jim Scholl | Sr. Sales Manager | Lhoist North America |
| Eric Schranz | General Manager, HMAT | A.L. Helmcamp, Inc. |
| Martin Schuh | Territory Manager | Purple Wave Auction |
| Noel Schulz | VP Marketing & Sales | Jebro Incorporated |
| Chris Scullion | Sr. Project Manager | BGE, Inc. |
| Tom Scullion | (not set) | Texas A&M Transportation Institute (TTI) |
| William Sears | Sales | Stansteel and Hot Mix Parts & Service |
| Jordan Sefcik | Director of Maintenance | Texas Department of Transportation |
| William Semora | Area Engineer | Texas Department of Transportation |
| Jason Septer | Division Manager | AtkinsRealis |
| John Serna | Transportation Engineer | Texas Department of Transportation |
| John Shanks | Area Sales Manager | Command Alkon |
| Jim Siddons | Shareholder / Bond Department Manager | Watkins Insurance Group |
| Lance Simmons, P.E. | Chief Engineer | Texas Department of Transportation |
| Ryan Simper | Wharton Area Engineer | Texas Department of Transportation |
| Varuna Singh | Deputy District Engineer | Texas Department of Transportation |
| Seve Sisneros | Area Engineer | Texas Department of Transportation |
| Pat Slattery | Paving Division Manager | ROMCO Equipment Co. |
| Chase Smith | Territory Manager | Crafco, Inc. |
| Ryan Smith | Vice President | Halff Associates, Inc. |
| Devin Smith | Construction Manager | Knife River Corporation |
| Walter Smith | Project Manager | HW Lochner |
| Steve Smith | Controls Sales Manager | Astec Industries, Inc. |
| Toby Smith | Superintendent | Texas Materials Gulf Coast Area |
| Thomas Smith | PM | Texas Department of Transportation |
| Ismael Solalinde | Resident Engineer | HNTB Corporation |
| Christopher Sommer | Marketing and Communications Manager | MOBA Corporation |
| Steve Southwell | Sales Manager Houston, South Texas | Heidelberg Materials Southwest Region |
| Dan Staebell | North American Business Development Manager | Cargill |
| Wesley Stanley | Transportation Specialist | TxDOT |
| Brian Stark | Sales | Humboldt Mfg. Co. |
| David Stephens | Project Manager | HW Lochner |
| James Stevenson | Division Director, Maintenance Division | Texas Department of Transportation |
| Jason Stilwell | Director of Infrastructure Sales | Martin Marietta Materials Southwest, Inc. |
| Ron Stinson | Estimating Manager | Texas Materials Group, Inc. |
| Kevin Stone | Vice President | Bay, Ltd. |
| Tim Stone | VP Sales | U.S. Lime & Minerals/Texas Lime Company |
| Steve Stone | Area Sales Manager - East TX/LA | U.S. Lime & Minerals/Texas Lime Company |
| Lisa Stott | Safety Rep | Texas Materials Group, Inc. |