We’ve begun using the term “Fourth Runway” to describe two large projects (SR-509 and the Sustainable Airport Master Plan) as one system, which they are. The two projects have always been part of a regional plan begun over fifty years ago to meet the strategic goals of the Port Of Seattle and regional planners. The construction of SR-509 will affect the communities are great deal. But starting in 2027 the projects will also increase flight operations at least 33% and cargo operations by 300%.
2001-06-22
Aerial photograph showing a highway with a tunnel portal, a rectangular concrete structure with green equipment units, a newly constructed retention/settling pond with orange sandy margins, and an airport runway in the background. The site appears to be an active construction project, likely stormwater or noise mitigation infrastructure, situated between a major freeway and an airport airfield.
2001-06-22