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TRB webinar: Performance of GRS–IBS

News | October 12, 2016 | By:

The U.S. Transportation Research Board (TRB) will conduct a webinar on Monday, Oct. 24, 2016, 2–3:30 p.m. (ET) that will present how three geosynthetic reinforced soil–integrated bridge systems (GRS–IBS) performed.

There are currently more than 200 GRS–IBS projects in the U.S., several of which are being monitored to verify the expected performance of the structures. This webinar will highlight the overall observed performance of GRS–IBS projects around the country. Presenters will provide lessons learned to help attendees gain insight into the behavior of this system.

This webinar was organized by the TRB Standing Committees on Geosynthetics and Transportation Earthworks. Participants must register in advance and there is a fee for non-TRB Sponsor or non-TRB Sustaining Affiliate employees. A certificate for 1.5 professional development hours (PDHs) will be provided to attendees who register and attend the webinar.

Webinar presenters

  • Jennifer Nicks, U.S. Federal Highway Administration
  • Christopher Meehan, University of Delaware
  • Derrick Dasenbrock, Minnesota DOT
  • Peter Connors, Massachusetts DOT

Moderated by: Daniel Alzamora,
U.S. Federal Highway Administration (FHWA)

Webinar outline

  1. Overview of GRS–IBS instrumentation
  2. Case studies:
    • BR 1-366 Chesapeake City Road over Guthrie Run in delaware
    • CR 55 over Minnesota Southern Railway
    • Route 7A over the Housatonic Railroad in Massachusetts
  3. Overview of projects around the country and their overall performance
  4. Question and answer session

The first 60 minutes of the webinar will be for presentations and the final 30 minutes will be reserved for audience questions. The Registered Continuing Education Program (RCEP) categorizes this webinar activity as relating to health, safety, and welfare including core technical.

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

  • Identify the three primary GRS–IBS components
  • List types of instrumentation used and their intended purpose
  • Describe observed performance of GRS–IBS

Registration information

There is no fee for employees of TRB Sponsors or TRB Sustaining Affiliates who register using their work email address. In addition to employees of TRB sponsor organizations, the following are eligible to receive complimentary webinar registration:

  • TRB and National Academies employees
  • Chairs of TRB standing committees, sections, or groups
  • Members of the media
  • Employees of tribal governments
  • Members of Congress or their staff

Other sites must pay $95 per site. View the pricing page for details.

After registering you will receive a confirmation email containing information about joining the webinar.

Professional development hours (PDHs)

A certificate for 1.5 professional development hours (PDHs) will be provided to professional engineers (PEs) who register and attend the webinar as an individual. For groups, only the person that registers and attends the session will receive a PDH certificate. 

Individuals registered as Florida PEs are no longer required to email TRB with your license number to report your attendance. Instead, please use your certificate that TRB provides through as verification of your attendance to the Florida Board of Professional Engineers.

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

This webinar was developed in March 2016. TRB has met the standards and requirements of the Registered Continuing Education Program (RCEP). Credit earned on completion of this program will be reported to RCEP by TRB. Certificates of Completion will be issued to individuals who register for and attend the entire webinar session. Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, D.C., 20005. Website:

Registration questions? Contact Reggie Gillum at

Source: TRB

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