Jan. 23 update: Hyperbaric investigations continue

Posted on Jan 23 2014 3:52 PM

Crews have now performed 17 hyperbaric sessions inside the SR 99 tunneling machine’s excavation chamber, and in front of its five-story-tall cutterhead. That’s a total of 68 hours of hyperbaric work since crews started inspections on Jan. 17. Crews have not found anything significant beyond what we reported on Jan. 21.

Previous updates

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

Jan. 14, 2014 update – Diving deeper into the tunneling stoppage

Jan. 13, 2014 update – Filling in shaft number three