TRB Webinar: T-1 Steel, I-40 Bridge, and the Way Forward

Register for this webinar

November 10, 2022 12:00 PM - 01:30 PM U.S. Eastern
Cost (for your seat)
Professional Development Hours for this webinar
1.50 hour(s)
Continuing Education Hours for this webinar
AAE: 0.00 hour(s)
AICP: 0.00 hour(s)
CLE: 0.00 hour(s)

On May 11, 2021, a partial fracture was discovered on one of the two tie girders on the Hernando de Soto Bridge. This four lane, 900 foot main span bridge carries traffic across the Mississippi River between Memphis, Tennessee and West Memphis, Arkansas. This finding required an immediate river and road closure. TRB will host a webinar on Thursday, November 10, 2022 from 12:00 PM to 1:30 PM Eastern that will share the response to this event, which included a special inspection, analysis, development of analytical models, and repair plans. Presenters will discuss the Federal Highway Administration (FHWA) directives regarding the inspection and testing of butt welds fabricated from AASHTO M244 Grade 100 steel, more commonly known as “T-1” steel. Presenters will also discuss recommendations for addressing the FHWA directive testing requirements.

This webinar is sponsored by the TRB Standing Technical Committee on Steel Bridges.

Registration is free for employees of TRB sponsors as well as Titanium and Cobalt Global Affiliates. The registration rate for all other attendees is $100. Sign into to view registration information. Contact Patrice Davenport to inquire about becoming a TRB sponsor or global affiliate organization.

A recording will be sent to all registrants after the webinar.


Webinar agenda and presenters

  • I-40 bridge response and analysis – Jason Stith, Michael Baker International
  • I-40 bridge response testing and lessons learned – Curtis Schroeder, Wiss, Janney, Elstner Associates, Inc.
  • FHWA directive on T-1 steel – Derek Soden, FHWA
  • Question and answer session moderated by Rob Connor, Purdue University

The first 60 minutes of the webinar will be for presentations and the final 30 minutes will be reserved for audience questions.


Learning Objectives

At the end of this webinar, participants will be able to:

  • Identify T-1 steel and the importance of the FHWA directive
  • Summarize lessons learned from a response to a partial fracture on a high traffic bridge
  • Explain the testing and repair of the I-40 bridge and takeaways from the event


Professional Development Hours

Professional engineers (PEs) who register and attend the entire webinar as an individual will be awarded 1.5 Professional Development Hours (PDHs). TRB’s webinar program awards PDH credits only to the registered individual, and not to other members of a group that view the webinar together. To be eligible for the credits, individuals must remain signed in for the entire webinar, including for any question and answer session following the presentations.

Please check with your licensing board to ensure that TRB webinar PDHs are approved by your board.

TRB will report credits earned to the Registered Continuing Education Program (RCEP). Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, D.C., 20005.

Pre-registration is required. Once the webinar starts, you will be unable to register. Individuals that are registered for a webinar but do not receive their confirmation emails due to their organization’s internal firewalls should contact TRB Helpdesk for assistance in signing in.

View our FAQ page for more information.

Registration questions? Contact TRB webinar program.