U.S. Army Corps of Engineers officials awarded a $657 million contract to build a fish passage facility at Howard A. Hanson Dam on the Green River to Flatiron-Aecon Joint Venture.

Flatiron is based in Colorado with numerous offices, including a Renton location. Aecon is a Toronto, Ontario-based company with numerous offices, including one in Lynnwood. Army Corps officials awarded the contract Oct. 16.

“We are excited to support salmon and Orca recovery with our tribal partners, federal and state agencies, and our non-federal sponsor Tacoma Public Utilities to ensure completion of this downstream fish passage facility and support the regional water supply,” said Col. Kathryn Sanborn, Army Corps Seattle District commander.