• 1

    SEAOI Failure Webinar

    Ross J. Smith - Wiss, Janney, Elstner Associates
    Jonathan McGormley - Wiss, Janney, Elstner Associates
    Sebastian Mendes - Thornton Tomasetti
    Liling Cao - Thornton Tomasetti
    Don Green - Michael Baker International

    August 18, 2022 - 10:00am to 2:30pm

  • 1

    Workshop: Designing Cross-frames & Diaphragms for Steel Bridges

    Brandon Chavel - Michael Baker International
    Devin Altman - National Steel Bridge Alliance
    Ronnie Medlock - High Steel Structures, LLC

    September 14, 2022 - 8:00am to 12:00pm

  • 1

    Renew today to prevent interruption of benefits

    Join or renew now for a full year of SEAOI programs and benefits in 2022-2023

  • 1

    New Webinars Available!

    SEAOI is pleased to offer many recorded lectures and classes for CE credit. Many are free for members and all are available on demand. Find a webinar today!

  • 1

    Find a Structural Engineer

    Looking for an engineer for a residential or small commercial project?  Many SEAOI members specialize in smaller scale projects!  


Welcome to the SEAOI website! Whether you are a practicing engineer, a curious student, or an interested citizen, you can find the information you need here. SEAOI was founded in 1965 to advance and advocate excellence in structural engineering and to aid in safeguarding the public. In 2015, we celebrated 50 years of living out our mission in Illinois.

Calendar of Upcoming Events

You can always find the latest events listed in the column to the right, on our Events Calendar page, or, if you prefer a calendar format, on our Google calendar

Join our mailing list!

SEAOI sends a weekly Tuesday Update email, as well as selected other annoucements for special events and news affecting the engineering community.  Use the button below to sign up.  You can also indicate your interest in Bridge Events, Central Illinois activities, and Women in Structural Engineering (SEAOI WiSE).

Sign Up for Email Updates

Contact us!

Have a question about SEAOI?  Interested in getting involved as a volunteer?  Contact us!