Jan. 28 update: SR 99 tunneling machine inches forward

Posted on Jan 28 2014 4:08 PM

Seattle Tunnel Partners pushed the SR 99 tunneling machine forward approximately 2 feet today. Doing so allows crews to build the next concrete ring of the tunnel. Workers are now testing systems and evaluating the machine to see what maintenance might be needed before they resume tunneling. 

Previous updates
Jan. 27, 2014 update – Restart of tunneling machine begins this week; evaluation will follow initial mining

Jan. 23, 2014 update – Hyperbaric investigations continue

Jan. 21, 2014 update – Hyperbaric inspections continue

Jan. 17, 2014 update – Crews begin inspecting excavation chamber

Jan. 16, 2014 update – Working with Seattle Tunnel Partners to resume tunneling