contractor says highway tunnel under seattle to open in august 2017, 20 months behind schedule

by:Gewinn     2019-08-15
SEATTLE -
National Transportation officials said Monday that a new road tunnel through downtown will not open until August 2017, about 20 months later than originally scheduled.
The contractor\'s Seattle tunnel partner said the tunnel construction is expected to resume in April.
Huge tunnel
2-The boring machine on the stop working
In December 2013, a mile-long tunnel after about 1,000 feet kilometers of driving, large machines trapped underground needed to be repaired to resume drilling.
Contractors and state officials said they were unable to determine the exact completion date until the tunnel construction resumed.
\"The schedule is very important for us,\" Matt Preedy of the Department of Transport said on a phone call with reporters . \".
\"At the end of the day, it\'s a safe job.
He added, \"the state is fully committed to the end of this work . \"
\"We still have plans to mitigate this delay,\" said Chris Dixon, project manager for the Seattle tunnel partner, speaking on Monday about the delayed completion date . \".
But it depends to a large extent on when the excavation happens, when it is completed, and what work remains to be done for the whole project at that time, Dickson said.
Preedy said that the date of August 2017 is outlined in the monthly schedule provided by the contractor to the Transport Agency, which may change again.
This date is also nearly a year later than the date the contractor targeted in the tunnel.
The boring machine is stuck.
Last month, when the work stopped temporarily, the project encountered another obstacle so that engineers could investigate the ground settlement around the water inlet being dug to reach and replace the damaged rig head.
The workers have been \"taking off.
Watering \"to relieve pressure from under the pit and from the side of the pit.
Last week, staff resumed excavation work, and transport officials said on Monday that settlements near the pit had remained stable since the end of last month.
Although some ground subsidence is expected, the agency said on Monday, \"the measured settlement is larger and farther than expected . \".
The agency said that since the beginning of December, the staff working on the construction investigation \"found some minor cosmetic damage in some buildings, but did not find any structural damage . \".
The $2 billion tunnel is designed to replace the aging Alaska highway viaduct that was damaged in the 2001 magnitude earthquake.
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