haller lake community club, march 6, 2014 northgate link project: transmission line relocation...
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Haller Lake Community Club, March 6, 2014
Northgate Link Project: Transmission Line Relocation Update
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Link Light Rail System
• 16 miles of light rail with 13 stations currently in service
• University Link under construction; opens 2016
• ST2 Plan funded extensions to Overlake, South King County, and Lynnwood
• 54 mile system
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Northgate Link Extension
• 4.3-mile light rail extension• Stations at U District, Roosevelt, and
Northgate• Open for Service: 2021• 62,000 daily boardings added to
system by 2030
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Northgate Station Area Update
• Portal construction underway; first tunnel boring machine (TBM) launched in late May/early June
• Northgate Station design 90% complete; public open house on March 12th
• Station and guideway construction begins in
early 2016
• Early utility relocations in 2014-20154
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Public Involvement – December 5th Open House
• Over 740 meeting notices delivered to
residents within 1 block of proposed route
• Project newsletter also sent to Northgate
area residents
• 31 people attended open house
• Over 90 written comments since meeting
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Transmission Lines Conflict with Elevated Guideway
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115kV Transmission Lines Relocation• Elevated guideway conflicts with SCL
transmission line on 1st Ave NE
• Alternatives east of I-5 considered; SCL conceptually approved Meridian Avenue N. & N. 115th Street route
• Scope of transmission line relocation:- relocate ~ 4,000’ of 115kV line- install 13 new poles in street right-of-way - taller pole height to avoid tree impacts- steel poles will replace some wood poles
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Initial concept shown on Dec. 5th
• 7 existing wood poles to be replaced, mostly along N 115th St
- heights (75’ to 115’)
• 5 new poles proposed along Meridian Ave N
- heights (110’ to 130’)
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Community Feedback
Poles out of character with residential neighborhood and not appropriate for non-arterial street:
• Too tall• Too wide• Steel
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Design Modifications along N. 115th Street
Sound Transit in cooperation with Seattle City Light and Seattle Department of Transportation have modified the design along N. 115th Street:
• Reduced Pole Heights (5 to 20 ft.)• Replaced Steel with Glued-Laminated
(Glu-Lam) Wood Poles• Reduced Pole Widths
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Project Improvements
• Modified 3 poles from steel to wood poles
• Reduced heights along N.115th Street down to 95 feet (up to 20 foot reduction)
• Modified pole placements to avoid utility conflicts
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EXISTING INITIAL
N. 115th Street at Corliss Avenue N. Looking East
MODIFIED 12
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EXISTING MODIFIED
2100 Block – N. 115th Street
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What we heard
• Poles too tall
• Too wide
• Not steel
Summary Response to Community Feedback -Design Modifications on N. 115th
How we responded
• Reduced height
• Smaller base
• Wood poles
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Next Steps
• Geotechnical Investigations –
Summer 2014
• Final Design – Fall/Winter 2014
• Replace Poles – 2015
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Questions?
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For more information • Sign Up to Receive Email Updates
– www.soundtransit.org/subscribe• Sound Transit Website
– www.soundtransit.org/northlink• Contact Rhonda Dixon:
– 206.398.5300– [email protected]
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