(Updated July 5th – Original version contained a typo. If you have embedded or posted a link to the original video, please update your links. Thank you.)

Just prior to yesterday’s groundbreaking ceremony (video here) for the new transit bridge over the Willamette river, Rob Barnard, TriMet’s director of the Portland-Milwaukie Light Rail Project, gave a presentation covering the bridge design and construction techniques. He also took a few questions from the audience. Rob’s PowerPoint slides are integrated into this video, along with some additional footage and maps.