Seattle, Washington, April 4, 2017 – After many delays, Bertha, the tunneling machine reached its destiny yesterday by breaking through the concrete wall of the disassembly vault. Yesterday’s event was a major milestone for this incredible infrastructure project. The completion of the SR-99 Alaska Way Viaduct Replacement Projection will then lead to the exciting redevelopment of Seattle’s Waterfront. For more details and photos click here: Bertha Breaks Through