On November 13, 2020, the Civil and Environmental Engineering Department's Undergraduate Seminar featured video presentations and discussion on the history and current rehabilitation of the Three Sisters Bridges in downtown Pittsburgh, also known as the Sixth, Seventh and Ninth Street Bridges, or the Roberto Clemente, Andy Warhol and Rachel Carson Bridges. Arranged by the Allegheny County Director of Public Works and IRISE Steering Committee member Stephen Shanley, the County's Bridge Engineer Richard Connors narrated three short videos and responded to student questions in a virtual environment. You can view the presentations by clicking on the links below.