Northgate Link tunnel

Northgate Link tunnel
Viewed from Roosevelt station in 2019
Overview
Line 1 Line
LocationSeattle, Washington, U.S.
StatusActive
StartMaple Leaf Portal (near Northgate station)
EndUniversity of Washington station
Operation
Constructed2012–2021
OpenedOctober 2, 2021 (2021-10-02)
OwnerSound Transit
TrafficLink light rail
Technical
Length3.4 mi (5.5 km)
No. of tracksDouble
Track gauge4 ft 8+12 in (1,435 mm)
Tunnel clearance21 ft (6.4 m)
Width21 ft (6.4 m)
Route map
Northgate
Maple Leaf portal
Roosevelt
U District
University of Washington

The Northgate Link tunnel is a light rail tunnel in Seattle, Washington, United States. The twin-bore Link light rail tunnel, built as part of the Northgate Link extension (formerly known as "North Link"),[1] carries a section of the 1 Line and connects the University District to Northgate.

The tunnel begins at University of Washington station (the north end of the University Link tunnel) and travels northwest across the University of Washington campus. It serves intermediate stations at U District and Roosevelt before emerging on the east side of Interstate 5 at a portal in Maple Leaf. Light rail trains then continue on an elevated guideway to Northgate station, where the extension ends. The extension was approved in 2008 by voters in the Sound Transit 2 (ST2) package, began construction in 2012, and entered service on October 2, 2021.[2] The extension cost $1.9 billion to construct.

  1. ^ "New Project Name". Sound Transit. Retrieved July 20, 2012.
  2. ^ Craighead, Callie (October 2, 2021). "Seattle's Northgate Link light rail extension officially opens for riders with 3 new stations". Seattle Post-Intelligencer. Retrieved October 2, 2021.