1 Line (Sound Transit)

1 Line
; 1 Line
	A four-car train near SeaTac/Airport station
Overview
Type	Light rail
System	Link light rail
Locale	Seattle metropolitan area, Washington, U.S.
Termini	Lynnwood City Center (north); Federal Way Downtown (south)
Stations	26
Ridership	28,910,300 (2024)
Website	soundtransit.org
Operation
Opened	July 18, 2009
Owner	Sound Transit
Operator(s)	King County Metro
Character	Surface, elevated, and underground
Rolling stock	62 Kinkisharyo-Mitsui LRVs; 152 Siemens S700s;
Technical
Line length	40.95 mi (65.90 km)
Track gauge	Lua error in package.lua at line 80: module 'Module:Track gauge/data' not found.
Operating speed	55 mph (89 km/h)
Map of the 1 Line

The 1 Line, formerly Central Link, is a light rail train line in the Seattle metropolitan area, in the U.S. state of Washington, and is part of Sound Transit's Link light rail system. It has 26 stations and runs 40.95 miles (65.90 km) connecting the Seattle-Tacoma International Airport, Downtown Seattle and the University of Washington. 1 Line started running on July 18, 2009. It was extended south to SeaTac/Airport station in December 2009, north to the University of Washington station in March 2016, south to Angle Lake station in September 2016, north to Northgate station in October 2021, north to Lynnwood station in August 2024, and south to Federal Way Downtown station in December 2025. The line was previously named Central Link, and later temporarily named Red Line, until its name was changed to 1 Line and the line color was changed from red to green in 2021.

1 Line (Sound Transit) Media

A Tacoma-bound Puget Sound Electric Railway interurban train seen in the 1920s
The headhouse of Beacon Hill station, seen under construction in May 2009
The high bridge here crosses the Duwamish River in Tukwila; the low bridge carries East Marginal Way S.
The opening ceremony for the Lynnwood Link Extension on August 30, 2024
A four-car Series 1 light rail train on Martin Luther King Jr. Way in Seattle
Lynnwood City Center Station opening day festival - 01
Mountlake Terrace Station from garage, July 2025
Shoreline North 185th Station on opening day
Shoreline South 148th Station view from parking garage - 01
Northgate Station on opening day, seen from the bridge - 03