TRB Webinar: Latest Advances in Large Span Buried Bridges

October 03, 2019 02:00 PM - 03:30 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)

Bridge engineers are invited to a TRB webinar on Thursday, October 3, 2019, from 2:00 PM to 3:30 PM ET. This webinar will identify strategies for constructing and maintaining large span buried bridges, which have at least a 50 foot span and consist of a buried structure that works with granular backfill to support design loads through soil-structure interaction. Over the past 20 years, there have been significant advancements and improvements in analysis, manufacturing, and materials that have resulted in an increase in structure spans, load carrying capabilities, and possible applications of buried bridges. This webinar will therefore demonstrate how large span buried bridges may be used as an alternative to conventional bridges. Presenters will discuss advance bridge construction applications, resilience, and project development. They will illustrate several case studies to highlight design standards and tools, steps taken to develop buried bridge projects, and considerations in specifications. This webinar is adapted from a workshop from the 2019 Annual Meeting.

This webinar was organized by the TRB Standing Committees on Subsurface Soil-Structure Interaction; Culverts, Buried Bridges, and Hydraulic Structures; and Low-Volume Roads.

Some registrants will need to pay $95 to attend this webinar.  Sign into to view registration information.

Webinar Presenters

  • Joel Hahm, Big R Bridge
  • Michael Carfagno, Contech Engineered Solutions LLC
  • Kevin Williams, Atlantic Industries Limited

Moderated by: Joel Hahm, Big R Bridge

Webinar Outline

  1. Introduction to large span buried bridges
  2. Latest advances in large span precast concrete buried bridges
  3. Latest advances in large span steel buried bridges
  4. Questions and answers

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 resources that provide a pathway for consideration of large span buried bridges as an option on short to medium span bridge projects
  • Describe the applications and capabilities of large span buried bridges
  • Describe how to develop and specify large span buried bridge projects

Professional Development Hour Information

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 approved webinars, TRB’s webinar program awards Registered Continuing Education Provider (RCEP) Professional Development Hour (PDH) credits associated with participation only to the registered individual and not to other members of a group that view the webinar together. To receive PDH credits, please register as an individual and sign into the webinar from your personal computer. After doing this, you may join your group in a meeting room.  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.

In addition, advance registration is available until just before the webinar starts. Once the webinar starts, you will be unable to submit your registration. Individuals that are registered for a webinar but do not receive their confirmation emails due to their organization’s internal firewalls should contact the TRB Helpdesk ( for assistance in signing in.

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 2019. 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. Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, DC 20005. Website:

Registration questions? Contact Reggie Gillum at