Governor Mario M. Cuomo Bridge aerial

2020 North American Steel Construction Conference: The Virtual Steel Conference

April 22 - 24, 2020

Tune in with us to The Virtual Steel Conference! The American Institute of Steel Construction is protecting the health and safety of its presenters and attendees by offering some of this year's originally planned World Steel Bridge Symposium sessions as a virtual experience for free. 

The format may have changed, but our presenters are still looking forward to sharing valuable insight into National Steel Bridge Alliance resources, findings from the nationwide pricing study of steel and concrete bridges we completed on behalf of AISC/NSBA, innovations on the Governor Mario M. Cuomo Bridge, and defining factors that actually contribute to an elevated risk of constraint-induced fracture in steel girder bridges and which don't. 

1 PDH and Just In Time Sign-in
Our speakers’ sessions are eligible for 1 PDH at no cost. Register for the virtual conference in advance and then visit the event's Schedule Page at the time of the session and click on the session link to attend.

Our Virtual Steel Conference Sessions

Get to Know the NSBA Designer Resources for Faster Results

  • Wednesday, April 22 | 11 a.m.–12 p.m.
  • Speakers: Domenic Coletti, HDR; Chris Garrell, National Steel Bridge Alliance

Bridge designers are often faced with too much to do and too little time to do it, especially when it comes to design. The NSBA has numerous resources available for free to help you design a steel bridge faster than ever before. From more common resources like LRFD Simon and the AASHTO/NSBA Collaboration Documents to upcoming resources currently in development, the NSBA resources are a proven design aid for bridge designers.

Pricing Study of Recently Constructed Steel and Concrete Bridges

  • Thursday, April 23 | 9:30-10:30 a.m.
  • Speakers: Michael DiGregorio and May Raad, HDR

HDR recently completed a nationwide pricing study of steel and concrete bridges on behalf of AISC/NSBA. There is a perception that steel bridges are more expensive than concrete bridges, even though steel bridges offer many advantages that concrete bridges cannot. The expectation of higher upfront construction cost leads to the decision to use concrete over steel. We'll explore the upfront construction cost on both steel and concrete bridges from around the country. 

Design and Construction Challenges of the Governor Mario M. Cuomo Bridge Replacement of the Iconic Tappan Zee Bridge

  • Thursday, April 23 | 3:30-4:30 p.m.
  • Speakers: Michael Martello and Ken Wright, HDR

The Governor Mario M. Cuomo Bridge replaced the iconic Tappan Zee Bridge over the Hudson River north of New York City. This presentation will describe the project background and why a composite steel superstructure was determined to provide the ideal solution for the site. The chosen alternate, fueled in part by the large equipment available to the contractor team, led to a highly modularized solution both for the steel superstructure and the concrete substructure. The steel solution led to the lightest structure alternative, which was important given the challenging foundation conditions. They key to a successful project was rooted in a team focus on developing an overall bridge system that provided the best overall value. The presentation will contain construction photos to demonstrate how the bridge effectively spans the Hudson River, as well as indicating some of the special erection equipment and procedures used for the bridge. The presentation will also explain the innovative steel design details and construction methods developed for efficient and safe erection of steel segments of the Cuomo Bridge.

Current Information on Constraint-Induced Fractures and Intersecting Welds

  • Friday, April 24 3:30-4:30 p.m.
  • Speakers: Domenic Coletti, HDR; Robert Connor, Purdue University

The Federal Highway Administration recently produced a report intended to clarify misconceptions about intersecting welds and constraint-induced fracture. We’ll explain which factors actually contribute to an elevated risk of constraint-induced fracture in steel girder bridges and which don't. We’ll also review the history of steel beam fractures and how these may or may not be classified as constraint-induced fractures.