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SR 99 - Intelligent Transportation Systems - Project Map



The SR 99 Intelligent Transportation Systems Project starts at SR 599 just south of S. Boeing Access Road and ends at SR 99 and N. 145th Street in Shoreline. The project is divided into two sections north and south of the Duwamish River.

North of the Duwamish River:
We will install cameras, overhead electronic message boards and fiber optic communications in the following areas:

  • E. Marginal Way S. and Ellis Avenue S. to the West Seattle Bridge.
  • SR 99 (Aurora Avenue N.) from Ward Street, just north of the Battery Street Tunnel, to N. 145th Street in Shoreline.

South of the Duwamish River:
We will install cameras, overhead electronic message boards and fiber optic communications in the following areas:

  • SR 599 from I-5 to SR 99.
  • SR 99 from SR 599 to the Duwamish/1st AvenueS. Bridge.
  • SR 509 from S. 112th Street to SR 99 at the Duwamish/1st Avenue S. Bridge.