Northgate Link Extension

Northgate Link Extension route map

Legend

to Lynnwood Link Extension

Northgate

Northgate Link Extension (formerly known as "North Link"^[1]) is a Link Light Rail extension in Seattle, Washington that will connect the University District to Northgate. Northgate Link will travel in two tunnels from University of Washington station, the northern terminus of the University Link Extension, through underground stations at U District and Roosevelt towards Northgate, emerging on the east side of Interstate 5 and continuing on an elevated guideway to Northgate station. The extension was approved in 2008 by voters in the Sound Transit 2 (ST2) package, began construction in 2012, and is expected to open for service in 2021.

Routing

For the Northgate Link Extension project, the tunnel already under construction for University Link will continue north to the University District and the Roosevelt neighborhoods before emerging at the surface along I-5 near NE 94th Street to serve the elevated Northgate station.

Sound Transit is preparing to extend mass transit from Northgate to Lynnwood, which voters approved as part of the Sound Transit 2 Plan in 2008, along with funding to continue planning future service all the way to Everett. This project is known as the Lynnwood Link Extension Project.

Stations

Name	City/Neighborhood	Location
University Link Tunnel to Capitol Hill and Westlake
University of Washington	University District, Seattle	Montlake Blvd. NE and NE Pacific St.
North end of University Link
U District	University District, Seattle	NE 45th St. and Brooklyn Ave. NE
Roosevelt	Roosevelt, Seattle	NE 65th St. and 12th Ave. NE
North end of tunnel (Maple Leaf Portal); south end of elevated section
Northgate	Northgate, Seattle	1st Ave. NE and NE 103rd St.
End of line; future extension to Lynnwood

Construction

Cutting head of tunnel boring machine "Brenda" (right) at Roosevelt Station pit after completing tunnel from Northgate

Construction on the Northgate Link Extension began in 2012 and is scheduled to open for service in 2021.^[2]

Tunnels

The first tunnel segment, one of two 3.4-mile (5.5 km) parallel tunnels between Roosevelt Station and the Maple Leaf Portal, was completed on March 17, 2015, by a 21.5-foot (6.6 m) diameter tunnel boring machine named Brenda.^[3] Brenda and a sister machine named Pamela will together dig six tunnel segments between the portal and the University of Washington station, with expected completion in late 2017.^[4]

Pamela was stopped 650 feet (200 m) north of U District station for six weeks from late December 2015 to early February 2016 after encountering hard soil that damaged five motors and the main gear of the machine. Repairs and possible replcements are expected to take three to eight months, potentially delaying the project's opening if the five months of float time is exceeded.^[5]

References

↑ "New Project Name". Sound Transit. Retrieved July 20, 2012.
↑ "Northgate Link Extension Project Phases". Sound Transit. Retrieved October 15, 2014.
↑ Mike Lindblom (March 17, 2015), "Transit-tunnel machine reaches daylight at Roosevelt Station", The Seattle Times
↑ Northgate link extension—Maple Leaf Portal and tunnels, Sound Transit, retrieved March 17, 2015
↑ Lindblom, Mike (February 11, 2016). "Another Seattle tunnel drill (not Bertha) damaged, needs repair". The Seattle Times. Retrieved February 11, 2016.

External links

Wikimedia Commons has media related to Northgate Link Extension.

Sound Transit's page on Northgate Link Extension

Mass transit in the Puget Sound region

Local and Express bus	Community Transit (list of routes) Everett Transit Intercity Transit Island Transit King County Metro (list of routes fleet) Kitsap Transit Pierce Transit Skagit Transit Sound Transit Express

Light rail	Link Light Rail (list of stations) (lines: Central Link • Tacoma Link) Future Extensions: East Link Federal Way Link Lynnwood Link Northgate Link University Link

Streetcar	Seattle Streetcar (lines: First Hill Streetcar • South Lake Union Streetcar) Waterfront Streetcar (discontinued)

Commuter rail	Sounder

Bus rapid transit	RapidRide (lines: A • B • C • D • E • F) Swift

Ferry	Guemes Island ferry King County Water Taxi Kitsap Transit Foot Ferry Steilacoom–Anderson Island Ferry Washington State Ferries

Monorail	Seattle Center Monorail

Other	Downtown Seattle Transit Tunnel ORCA card Sea-Tac Airport Satellite Transit System Trolleybuses in Seattle

Italics denote lines or services which are planned, under construction, or otherwise not operating at the present time.

Bridges and tunnels in and around Seattle

Bridges

Road	Alaskan Way Viaduct Ballard Bridge Cowen Park Bridge East Channel Bridge Evergreen Point Floating Bridge First Avenue South Bridge Fremont Bridge George Washington Memorial Bridge (Aurora Bridge) Homer M. Hadley Memorial Bridge (Third Lake Washington Floating Bridge) Jose Rizal Bridge Lacey V. Murrow Memorial Bridge (I-90 Floating Bridge) Magnolia Bridge Montlake Bridge North Queen Anne Drive Bridge Schmitz Park Bridge Ship Canal Bridge South Park Bridge Spokane Street Bridge 20th Avenue NE Bridge University Bridge West Seattle Bridge

Rail	Salmon Bay Bridge Wilburton Trestle

Tunnels

Road	Alaskan Way Viaduct replacement tunnel (under construction) Aubrey Davis Park (Mercer Island Lid) Battery Street Tunnel Convention Center-Freeway Park Lid Mount Baker Tunnel

Rail	Beacon Hill Tunnel Great Northern Tunnel Northgate Link Extension Tunnel University Link Tunnel

Multi	Downtown Seattle Transit Tunnel

Utility	Brightwater sewage tunnel

This article is issued from Wikipedia - version of the Friday, February 12, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.