AECOM Wins Major Contracts for Seattle Transit Expansion

Infrastructure firm to provide engineering, environmental, and construction services for Sound Transit projects

Published on Feb. 27, 2026

Got story updates? Submit your updates here. ›

AECOM, a global infrastructure firm, has been awarded a trio of contracts from Sound Transit, the regional transit agency in Seattle, to provide engineering design, environmental review, and construction management services for upcoming transportation projects across the city. The agreements were part of a broader initiative by Sound Transit that could generate around $1 billion in engineering services over the next five years.

Why it matters

This contract win is significant for AECOM as it positions the company as a key partner in Seattle's ambitious plans to expand and upgrade its light rail, commuter rail, and bus networks. The projects aim to increase capacity, improve reliability, and expand accessibility of the regional transit system, which is crucial for managing growth and reducing congestion in the rapidly developing Seattle metropolitan area.

The details

Under the contracts, AECOM will serve as the lead firm on the design work, managing civil and structural engineering from early development through final design. The company will also assist with environmental planning, including systemwide studies and regulatory approvals, as well as provide project and construction management services for major capital improvements.

  • The contracts were awarded through multiple-award task order contracts that will guide work over the next five years.
  • Sound Transit has issued 19 such contracts under the broader initiative, which could produce about $1 billion in engineering services during the performance period.

The players

AECOM

A global infrastructure firm that provides design, consulting, construction, and management services.

Sound Transit

The regional transit agency in Seattle responsible for planning, building, and operating light rail, commuter rail, and bus systems in the Puget Sound region.

Russell Jackson

Interim chief executive of AECOM's global Transportation business.

Got photos? Submit your photos here. ›

What they’re saying

“We look forward to supporting Sound Transit as it plans, designs and delivers the next generation of regional mobility that increases capacity, improves reliability and expands accessibility.”

— Russell Jackson, Interim chief executive of AECOM's global Transportation business (Benzinga)

What’s next

The contracts will guide AECOM's work on the transit expansion projects over the next five years, with the goal of increasing capacity, improving reliability, and expanding accessibility of the regional transit system in Seattle.

The takeaway

This contract win solidifies AECOM's role as a key partner in Seattle's ambitious plans to modernize and expand its public transportation infrastructure, which is crucial for managing the region's rapid growth and reducing congestion. The projects supported by these contracts will help improve mobility and accessibility for residents and commuters in the Seattle metropolitan area.