U830 University Link LRT Extension
Staying at the forefront of industry progress.
Staying at the forefront of industry progress.
Overview
The University Link project encompassed 3.15 miles of double-track light rail, extending from the east end of the Pine Street Stub Tunnel in Downtown Seattle to new stations at Capitol Hill and the University of Washington. The alignment was fully underground, serving two of the region’s highest-demand destinations.
Scope of Work
Modern Railway Systems (MRS) was responsible for designing and installing the signal system, traction power substations, communications, Overhead Catenary System, and SCADA systems. The University Link Systems project also included track installation, signaling, and communications throughout the corridor. A key feature was the installation of a No. 6 double crossover incorporating an industry-first movable point frog for light rail, designed to reduce noise and vibration. In addition, MRS replaced communication system elements across the initial segment and the Airport Link line, coordinating work to achieve minimal to no disruption to passenger service.
Impact
The project delivered a fully integrated underground light rail system that improved capacity, reliability, and rider experience. Advanced signaling and power systems, along with noise- and vibration-reducing innovations, supported safe, efficient operations while maintaining uninterrupted service across Sound Transit’s network.
Seattle, WA
Light Rail
CM/GC
2017
Sound Transit
Northwest
