University Link Light Rail Extension

University Link Light Rail Extension

When Sound Transit decided to expand the light rail system in Seattle, Washington, USA, it had to find a way to tunnel under the densely populated city without disrupting life above ground.

Sound Transit

Budget: US$1.8 billion

Seattle, Washington, USA

Highlight: Seattle Washington is the second worst city in the U.S. for time commuters are stuck in traffic. In order to reduce rising roadway congestion, this project was implemented to extend the light rail system 3.2 miles (5 kilometers) via underground tunnels. The rail line opened six months ahead of schedule, and the project closed US$200 million under budget.