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

  • Multi-modal’s long road into the transportation mainstream
    June 4, 2015
    Andrew Bardin Williams looks at 20 years of multimodal transport in the Sun Belt and beyond and the key requirement for user engagement. Phoenix residents will head to the polls in August to decide whether to implement a three-tenths of a cent sales tax to fund the city’s new multimodal transportation plan. It will be the second transportation-related sales tax hike in the past 15 years yet city officials and advocates expect the resolution to easily pass—despite the strong anti-tax environment that has dom
    Read More
  • Auckland’s Waterview Tunnel to open
    June 22, 2017
    Construction work on Auckland’s US 1 billion (NZ$1.4 billion) Waterview Tunnel has been completed and the twin 2.4km-long three-lane tunnels are expected to open to traffic in early July.
    Read More
  • Aimsun solutions support new planning tool for low-carbon mobility
    March 8, 2023
    The EU-funded HARMONY research project is behind a new planning tool to support sustainable transport policymaking. Aimsun scientific researcher Lampros Yfantis explains the key role of traffic simulation with Aimsun Ride in planning for on-demand mobility and logistics services
    Read More
  • Highway upgrade features Australian first intersection design
    September 22, 2016
    A new interchange design to improve traffic management will be a key part of a major Queensland, Australia road project, with the contract awarded today for a US$712 million (AU$929.3 million) upgrade to the Bruce Highway between Caloundra Road and the Sunshine Motorway. Minister for Infrastructure and Transport Darren Chester and Queensland Main Roads Minister Mark Bailey today announced a Fulton Hogan Seymour Whyte joint venture had won the contract for the project, which aims to ultimately reduce cong
    Read More

Highlighted Content