Bloomberg » The State Route (SR) 99 Alaskan Way Viaduct Project is a $4.2 billion effort to restore the view of Seattle’s waterfront by building a two-level underground highway. Tunnel construction is being done through a design-build (D/B) agreement between the Washington State Department of Transportation (WSDOT) and Seattle Tunnel Partners, a joint venture of Tutor Perini and Dragados USA. The tunnel project was estimated to cost $1.4 billion with completion expected by November 2015. However, the Bertha boring machine stalled in 2013 with $125 million in projected repair costs. This article details the project’s development through Bertha’s breakdown and recent rescue.