Chartered March, 1947

Geographic Region
Includes the counties of Lincoln, Warren, St. Charles, St. Louis, Franklin and Jefferson. Major cities/towns include St. Louis, Clayton, Warrenton, Wentzville, Union, Washington, Festus, and Hillsboro.

St. Louis Chapter Officers 2025-2026
President - Mark Kollitz, P.E.

President-Elect - Lisa Douglas, P.E.
Treasurer - James MacAdam, P.E.
Secretary - Tyler Wuestling, E.I.

Past President - Sean Martin, P.E.

State Director to MSPE - Jeff Hoevelmann, P.E.

Chapter Directors
Diane Grossenheidner, P.E.

Ehrin Sleet, P.E.

Erin Jearls, P.E.

Lisa Cheng, P.E.

Ron Black, P.E.

Shelby Sample, E.I.

Awards/Membership Chair

Diane Grossenheidner, P.E.

MATHCOUNTS Chair

Tyler Wuestling, E.I. 

Newsletter/Web Contact

Ehrin Sleet, P.E.

St. Louis Chapter Letterhead

St. Louis Chapter By-laws

St. Louis Chapter Foundation By-laws

St. Louis Chapter History

St. Louis Chapter Leadership Manual