City Light crews have restored power to all affected Laurelhurst/Windermere/Ravenna customers as of approximately 12:45 a.m. The outage had started at 11 p.m. last night and originally affected 5,300 customers. The cause was a failed underground cable.
Seattle City Light crews are working to restore power to about 5,300 customers in parts of Laurelhurst, Windermere, and Ravenna. The outage started at 11 p.m. and its cause is currently unknown. An early estimate for restoration, based on historical data, is 2 a.m. Monday, January 22. Customers can get updated outage information at www.seattle.gov/light/sysstat.
Crews worked through the night to restore power to approximately 12,900 customers. While crews worked to restore power to an earlier outage, four circuit breakers relayed offline causing a cascading effect and a small substation fire. The sequence of events led to a larger outage. Affected areas in parts of Ballard, Magnolia, and Queen Anne were returned to power by 6:15 a.m. this morning, Saturday, January 20. The cause of the original outage is still being investigated.
Seattle City Light crews are working to restore power to about 12,900 customers in parts of Ballard, Magnolia, and Queen Anne. While working to restore power to an earlier outage, four circuit breakers relayed offline causing a cascading effect and a larger outage. The Seattle Fire Department is responding to a small fire that resulted in the Broad Street Substation. An early estimate for restoration is later this morning, Saturday, January 20. Customers can get updated outage information at www.seattle.gov/light/sysstat.
Seattle City Light crews plan to enhance the reliability of the electrical system by pulling in new fiber-optic cables across Interstate 405 approximately two miles southeast of Alderwood Mall. To ensure safe work operations and passage for motorists, crews must intermittently conduct rolling slowdowns of traffic in both directions of I-405.
The work will take place at night beginning Monday, Sept. 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 fiber-optic cable overhead across the highway. Traffic will return to normal speeds once past the work area. See the map below for details on the differing locations for north and southbound rolling slowdowns. 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:
- Washington State Patrol troopers and contracted crews will intermittently intercept and escort southbound I-405 traffic through the work area beginning southeast of the I-5/I-405 interchange. The same will occur for northbound traffic beginning at NE 195th
- Traffic using the following on-ramps to I-405 will also be affected: I-5 northbound to I-405 southbound, I-5 southbound to I-405 southbound, NE 195th Street to northbound I-405, State Route 527 northbound to northbound I-405, and State Route 522 to northbound I-405.
- Should the crews finish in less than four nights, City Light plans to communicate via social media and at this Website: http://www.seattle.gov/light/atwork/release.asp?RN=397
Customers will benefit from increased electrical reliability. The new fiber-optic 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.
Seattle City Light’s point of contact for the media is Scott Thomsen, Communications, (206) 615-0978 and firstname.lastname@example.org. Stakeholder (e.g. emergency services) questions can be directed to Mark VanOss, Sr. Public Relations Specialist, (206) 684-3279 and email@example.com.
Map showing affected area of northbound and southbound rolling slowdowns on I-405
Have you ever stood beneath the Alaskan Way Viaduct and looked up? You may have noticed cables running along the underbelly of the viaduct. These 115 kV transmission lines look unassuming, but they are major conduits of electricity, powering downtown Seattle and the entire western seaboard!
Transmission lines which power downtown Seattle have been attached to the Alaskan Way Viaduct since it was constructed in 1953. Seattle City Light has been working to complete the full relocation of these transmission lines to a permanent location underground along Seattle’s waterfront since 2008. The Central Waterfront Transmission Line Relocation Project (TLR) must be completed before the Alaskan Way Viaduct demolition, scheduled for 2019, and the subsequent Waterfront Seattle Program which will reconnect downtown to the waterfront. The new waterfront will include new parks, paths and viewpoints.
In 2012, Seattle City Light completed TLR Phase 1 and relocated a section of transmission lines between Yesler Way and the Union Street substation. Due to changes in the project schedule related to the SR 99 Tunnel Project delay, construction of the final section of the TLR project was paused. TLR Phase 2, from South King Street to Yesler Way, is up and running.
Construction for Phase 2 began in April 2017 and is expected to last six months, with two additional months of cable pulling and splicing to connect with the lines already installed underground during Phase 1. Construction will start at Yesler Way and end at South King Street. The project is expected to be finished in fall 2017. The completion of this work sets the stage for future waterfront improvements.
City Light crews are responding to an outage in Renton/Skyway affecting approximately 7,300 customers. The outage started at 5:30 p.m. and is affecting two circuits and appears to be tree-related. The early estimate for restoration, based on historical data, is midnight. Customers can get more information at: http://www.seattle.gov/light/sysstat/
Seattle City Light is the 10th largest public electric utility in the United States. It has some of the lowest cost customer rates of any urban utility, providing reliable, renewable and environmentally responsible power to about 750,000 Seattle area residents. City Light has been greenhouse gas neutral since 2005, the first electric utility in the nation to achieve that distinction.
Seattle City Light and its contractor have completed a major milestone in the utility’s plans to improve the capacity, technology, and reliability of the electrical system in the Webster Point neighborhood of Laurelhurst.
KC Equipment has recently completed the installation of underground conduits, vaults, and equipment in order to replace outdated 4kV (4,000 volt) electrical equipment with updated 26kV (26,000 volt) infrastructure. Sidewalks, driveways, planting strips, and street panels affected by the work have been restored. A map showing the construction area and representative during and after photos are shown below.
The current 4kV cable is buried directly in the ground. The high capacity 26 kV cable will be protected by the installed conduit and vaults for greater reliability. The new 26kV electrical system will also have more switching points resulting in shorter outages with fewer customers affected when maintenance is required.
The infrastructure phase of the project was started in March of 2015 and completed earlier in May, 2016. The higher-capacity 26kV cable will be pulled in at a later date. Seattle City Light appreciates the patience of its customers during the successful completion of this important part of the project.
To learn more about Seattle City Light’s investments in infrastructure, visit our Construction Website.
Seattle City Light is enhancing the reliability of its electrical system by transferring transmission lines onto new poles on the east and west sides of Interstate 5 at NE 60th Street. Intermittent rolling slowdowns in both directions on I-5 between Northgate Way and State Route 520 are necessary for motorist and worker safety.
The two-day project is planned for early Tuesday morning, June 21, and early Wednesday morning, June 22, from 12:01 a.m. to 4 a.m. and is being coordinated with the Washington State Patrol. Traffic will be escorted through the construction zone. The map below shows the area affected by the rolling slowdowns. Multiple rolling slowdowns will be necessary with each lasting from 20 to 25 minutes. All on-ramp traffic from Northgate Way through SR 520 will be held and will merge with the next rolling slowdown. The I-5 express lanes will be closed.
Drivers are advised to carefully abide by traffic restrictions and consider using alternate routes during construction. Normal traffic flow will follow once the transfer of wire is complete.
Seattle City Light is the 10th largest public electric utility in the United States. It has some of the lowest cost customer rates of any urban utility, providing reliable, renewable and environmentally responsible power to about 750,000 Seattle area residents. City Light has been greenhouse gas neutral since 2005, the first electric utility in the nation to achieve that distinction
Beginning in early May, City Light plans to increase system reliability by replacing an old power transformer with a new one at the Shoreline Substation. The work will be similar to a new transformer installation that took place there in 2014. See the map for the location of the Shoreline Substation:
Construction will begin with jackhammering in the center of the substation yard during daylight hours in order to prepare the site for building the new electrical equipment. From approximately mid-August, crews will begin the assembly of the new transformer on its pad. Once assembly is complete, a truck-mounted mobile generator and oil processing tanker will be used to process the new transformer’s oil.
The upcoming construction work at Shoreline Substation is one of the many projects City Light carries out in order to maintain and improve electrical reliability in its service areas.
For more information on the Shoreline Substation construction project, please visit: http://www.seattle.gov/light/atwork/release.asp?RN=360