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State Route 519

The South Seattle Intermodal Access Project​

The State Route 519, or South Seattle Intermodal Access Project, is located in Seattle’s SODO District. The project purpose is to improve vehicle and freight access between I-5 and I-90 and the Seattle waterfront, including port container terminals, the ferry dock and the Seattle International Gateway Rail Yard. The project also increases safety by separating road, pedestrian, and rail traffic. The project was completed in two phases.

Phase 1 (2004) provides east-bound access to the freeway system, including the Atlantic Street, on ramps to I-90 and I-5 and the Atlantic Street overpass.

Phase 2 (2010) provides west-bound waterfront access from I-90 and I-5, including: 

  1. A new westbound off-ramp from I-5 and I-90 via the current South Atlantic Street Overpass
  2. A grade-separated local connector and pedestrian crossing on South Royal Brougham Way
  3. Improvements of the First Avenue South and South Atlantic Street intersection.

For more information, visit the Washington State Department of Transportation website here.

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