Sound Transit: alignment cannot enter Paine Field; station design will allow shuttle/overcrossing accommodations

Oct 15, 2026

Sound Transit told the committee the elevated guideway cannot enter Paine Field because of FAA airspace (Part 77) constraints; the agency said it will reserve station footprint space to accommodate Boeing- or airport-run shuttles or an overcrossing but would not build or fund those connections.

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During the DEIS briefing, committee members asked whether any station alternative could route directly into Paine Field. Galip Katra said Sound Transit determined an alignment into the airport is not feasible because an elevated guideway would raise FAA airspace issues (Part 77). He said Sound Transit will design station footprints to allow a pedestrian overpass or shuttle access if Boeing or the airport chooses to provide them, but Sound Transit would not build or fund those connections.

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