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Northgate Link Project: Transmission Line Relocation Update. Haller Lake Community Club, March 6 , 2014. 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

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northgate link project transmission line relocation update

Northgate Link Project: Transmission Line Relocation Update

Haller Lake Community Club, March 6, 2014

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
Link Light Rail System

2

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
Northgate Link Extension

3

northgate station area update
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 2014-2015

4

public involvement december 5 th open house
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

5

115kv transmission lines relocation
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 treeimpacts
    • - steel poles will replace some wood poles

7

initial concept shown on dec 5 th
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’)

8

community feedback
Community Feedback
  • Poles out of character with residential neighborhood and not appropriate for non-arterial street:
  • Too tall
  • Too wide
  • Steel

9

design modifications along n 115 th street
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

10

project improvements
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

11

next steps
Next Steps
  • Geotechnical Investigations – Summer 2014
  • Final Design – Fall/Winter 2014
  • Replace Poles – 2015

15

for more information
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
    • northlink@soundtransit.org

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