Skip to main content

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

  • News Test
    July 31, 2014
    News Test
  • ITS America applauds latest TIGER grants
    October 30, 2015
    US Transportation Secretary Anthony Foxx has announced US$500 million in TIGER (Transportation Investment Generating Economic Recovery) 2015 grants for 39 transportation projects in 34 states, some projects spanning several states. In selecting projects, Foxx prioritised the extent to which the proposed project strengthens access to opportunities through transportation improvements.
  • Last call for first AV to Michigan Central
    April 12, 2024
    Detroit's redeveloped railway station will be one of stops on new AV route in city
  • Siemens delivers complete EV infrastructure packages
    December 19, 2014
    Siemens is delivering electric vehicle (EV) rapid charging networks across the UK, including networks consisting of almost forty QC45 multi-standard EV chargers to be supplied and installed in South Tyneside and Dorset early in 2015. The networks will be connected to Charge-Your-Car Back Office , and include three years maintenance support provided by Siemens. Funded by the Office for Low Emission Vehicles (OLEV), the network in South Tyneside will consist of twenty QC45 triple-outlet, rapid chargers.