The 2013 Engineering Lecture Series examines our national and regional infrastructure up close. From road and rail networks to water and sewer conduits to national power and natural gas grids, life is dependent on systems. Learn more at UWalum.com/engineering.
Tunneling Toward a New State Route 99 Corridor
In the summer of 2013, Bertha, the world's largest-diameter tunneling machine began a historic journey beneath downtown Seattle. Its purpose: dig a tunnel to replace the SR 99 Alaskan Way Viaduct, a double-deck highway that has spanned the downtown waterfront for more than half a century. Learn about the decade-long process of planning and debate that went into the tunnel, and get an update on how this massive project is unfolding.
Matthew Preedy, P.E. (B.S. CEE ’92) Deputy Program Administrator, Alaskan Way Viaduct Replacement Program, Washington State Department of Transportation