Lynnwood Link Extension

This project extended Sound Transit’s light rail system from Northgate, WA, to Lynnwood, WA, adding 4.8 miles of double-track. The alignment runs through a narrow corridor parallel and adjacent to Interstate 5, featuring approximately 1.9 miles of direct fixation track on an elevated guideway and 3 miles of ballasted track in an at-grade guideway on retained cuts and fills.

The scope of work included constructing two stations, preparing infrastructure for a future third station, and building two large parking garages. MRS provided systems construction, testing, and equipment for both the at-grade and aerial guideways. Additionally, the project required significant modifications to the control systems at the Maintenance Facility and Operations Control Centers to ensure seamless integration with the extended rail system.

MCS provided engineering services for the Communications Subsystems across four stations and three garages as part of Sound Transit’s Lynnwood Link Extension project. In addition to these facilities, MCS delivered Communications Subsystems engineering for Traction Power Substations, Signal Bungalows, Emergency Access Points, and Trackway Intrusion Detection equipment along the wayside. The Communications Subsystems included Closed-Circuit Television, Emergency and Back-of-House Phones, Audio and Visual Public Address Systems, and Access Control.