United States

Seattle, Washington

999 3rd Avenue (SR 520 Project Office)
Suite 2300
Seattle, WA 98104-4044
United States

Get directions
Phone
(206) 770-3500
Fax
(206) 770-3569

600 University Street
Suite 500
Seattle, WA 98101-4132
United States

Get directions
Phone
(206) 826-4700
Fax
(206) 826-4701

Related Projects

Georgetown Wet Weather Treatment Station
Georgetown Wet Weather Treatment Station
Diablo Dam and Powerhouse Aerial
Seattle City Light Powerhouse Upgrades and Dam Safety Inspections
Yesler Way Bridge
Yesler Way Bridge Reconstruction
SR 520 Floating Bridge
SR 520 Bridge Replacement and HOV Program GEC

Ideas that Inspire Progress

In the Media
Duncan Griffin
Seattle Managing Principal Duncan Griffin Gets Personal with HCD
Article
highway with overpass and sunset
HDR Transportation Young Professionals Building Better Communities, One Project at a Time
Article
SR 520 construction
Experts Talk: Construction Management on Major Transportation Programs with Tom Horkan
In the Media
Tech News Insider CNET Features HDR Drone Inspection, 3D Modeling Capabilities
Tech News Insider CNET Features HDR Drone Inspection, Digital Twin Capabilities
Video
BIM team meeting
From Data to Insights: How Our GeoIM Practice Can Help You