PROJECT UPDATE (9/20/2017)
Crews completed the fiberoptic improvement work in two nights, so rolling slowdowns are no longer needed for the remaining days this week.
Seattle City Light crews plan to enhance the reliability of the electrical system by pulling in new fiberoptic cables across Interstate 405 approximately two miles southeast of Alderwood Mall.
To complete this work, crews must intermittently conduct rolling slowdowns of traffic in both directions of I-405 to ensure safe work operations and passage for motorists. The work will start on Monday night, September 18. Traffic will be intercepted and escorted at slow speeds for up to 15 minutes between just southeast of the I-5/I-405 interchange and NE 195th Street as crews install the new fiberoptic cable overhead across the highway. Traffic will return to normal speeds once past the work area. See the map for more details:
Drivers should expect delays and consider using alternate routes during construction.
Rolling slowdown details
Occurring nightly from 11:59 p.m. to 4 a.m. beginning Monday, Sept. 18 through the morning of Friday, Sept. 22:
Should the crews finish in less than four nights, City Light plans to communicate via social media and at this Website.
Customers will benefit with increased electrical reliability. The new fiberoptic lines will provide redundant communication between facilities generating power at City Light's Skagit hydropower sites, the Bonneville Power Administration, and City Light substations and its system control center.
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