Northwest Transit Systems Partners JV to oversee Sound Transit light rail expansion

Northwest Transit Systems Partners (NTSP), a joint venture consisting of US transportation design and construction management firm STV, and Mott MacDonald, is to oversee the systems construction of two new light rail extensions for Sound Transit’s light rail system in Seattle, US. The NTSP team will perform systems construction management services for the US$3.7 billion East Link Extension, a 14-mile-long extension connecting Seattle, Mercer Island, Bellevue and Redmond; and the US$1.9 billion 4.3-mile
August 23, 2017 Read time: 2 mins
Northwest Transit Systems Partners (NTSP), a joint venture consisting of US transportation design and construction management firm STV, and 1869 Mott MacDonald, is to oversee the systems construction of two new light rail extensions for Sound Transit’s light rail system in Seattle, US.


The NTSP team will perform systems construction management services for the US$3.7 billion East Link Extension, a 14-mile-long extension connecting Seattle, Mercer Island, Bellevue and Redmond; and the US$1.9 billion 4.3-mile Northgate Link Extension between the University of Washington at Husky Stadium, the University District and the Northgate area. Both extensions are key components of a larger system expansion being undertaken by Sound Transit over the next 25 years.

Sound Transit estimates that at least 50,000 people a day will use East Link by 2030. Once completed, the extension will be the world’s only passenger light rail service operating over a floating bridge, the section of I-90 over Lake Washington connecting Mercer Island and Seattle.

For more information on companies in this article

Related Content

  • Asecap Days 2025: seizing the opportunities
    May 28, 2025
    Delegates during day one of the two-day 52nd Asecap Days conference in Madrid were left in no doubt the financial challenges that face motorway concessionaires as the transition to different mobility increases in pace...
    Read More
  • Amazon keeps its head in the cloud
    December 17, 2021
    The days of Amazon just selling books may be long, long gone – but Randy Iwasaki of Amazon Web Services tells Adam Hill why the ability to tell stories still has an important place in a highly technical transport environment
    Read More
  • Rail safety technology launched in Central Minnesota
    January 7, 2013
    New safety technology being installed along some rail lines across the US, including Central Minnesota, aims to prevent deadly train crashes caused by human error. The technology is designed to automatically stop or slow a train to prevent accidents such as a collision with another train or a derailment caused by excessive speed. The changes stem from federal legislation passed in 2008 after a commuter train collided head-on with a freight train in California, killing twenty-five people and injuring 135. An
    Read More
  • ADOT advances wrong-way detection with US$3.7 million project
    June 14, 2017
    A US$3.7 million project by Arizona Department of Transportation (ADOT) to construct a thermal detection system to detect wrong-way vehicles and alert other drivers and law enforcement has been approved by the State Transportation Board. Once operational, the system will use thermal cameras, warning signs for wrong-way drivers and advisories for right-way drivers along a 15-mile stretch of I-17. In addition, the system will automatically focus highway cameras on the wrong-way vehicle and send automated aler
    Read More

Highlighted Content