The map below shows WSDOT's existing traffic management system for the Puget Sound region, as well as our plans for system expansion. The traffic management system includes vehicle detectors, cameras, ramp meters, variable message signs, and highway advisory radio. It provides the data for the traffic congestion map as well as the video for the camera snapshots that are available over the World Wide Web. As the system expands, the traffic congestion map will show conditions on more miles of roadway, and more camera images will be available.
Expansion Map

Last Updated: May 28, 2004
System Expansion Status
Interstate 405
  • Access Downtown Project: This project is scheduled for completion in 2005.
State Highway 18
  • I-5 to SR 167: This project is scheduled for completion in 2005.
  • Maple Valley to Issaquah-Hobart Rd: This project is scheduled for completion in 2006.
State Highway 525
  • SR 99 to SR 526: This project is scheduled for completion in 2004.
State Highway 527
  • 164th St SW to 132nd St SW: This project is scheduled for completion in 2005.

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