Video: How a double-deck highway is built inside the Seattle tunnel – with enough concrete to fill 9 football stadiums
By Michelle|2018-02-05T17:00:53-08:00July 14, 2016|Alaskan Way Viaduct, Design-Build, Roads, Videos, Washington|Comments Off on Video: How a double-deck highway is built inside the Seattle tunnel – with enough concrete to fill 9 football stadiums