Calgary city officials have given the Green Line light rail project formal approval, giving the project a way forward into the start of pre-construction in late 2017 and 2018.
For four years, Bertha, once the world’s largest tunnel-boring machine, came packed not only with 57.5-ft worth of diameter and over 8,000 tons of girth, but never-ending drama.
While the State Route 520 floating bridge connecting Seattle to points east over Lake Washington may have opened in spring 2016, it didn’t mark the full completion of the project off the water.
As we move closer to the 2019 milestone of opening the new State Route 99 tunnel under downtown Seattle, officials can start making plans for removal of the aging Alaskan Way Viaduct, the entire reason the new 1.7-mile tunnel was conceived originally.
It took three mobile cranes, including one of the largest mobile cranes in the country, working in a choreographed effort to successfully lower the new Tukwila Urban Center Pedestrian/Bicycle Bridge across the Green River in July.
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