35th Ave SW Road Safety Corridor Project

What's happening now?

Coming soon: 35th Avenue SW Phase 1 Before and After Evaluation and Phase 2 information and project schedule.


SDOT is launching a collaborative process to review roadway conditions along 35th Avenue SW. As safety is our number one priority, we are committed to preventing collisions and improving safety for all users of the transportation system.

Together we will determine the specific nature and design elements of these changes through the process described below. New safety measures to be considered through this project will include: arterial traffic calming, traffic signal modifications, pavement repair, and pedestrian and bicycle safety enhancements. To address behavioral issues like speeding, distraction and impaired driving, we will develop targeted enforcement strategies and area-specific educational outreach.

Facts about 35th Ave SW

  • Principal arterial roadway
  • Adjacent land uses
    • Single family and multi-family residential, commercial, industrial
    • Two libraries, two parks
    • Three schools within one block
  • Speed limit 35 miles per hour
  • Transit corridor
  • Average Daily Traffic:
    • 16,500 vehicles per day at SW Roxbury Street
    • 24,600 vehicles per day at SW Alaska Street
  • 294 collisions, 128 injuries and 2 fatalities in the last three years (2011-2014)
  • 5 fatalities in the last ten years (2004-2013)

Project Map

Project map


The two elements of our transportation safety projects will be installed at different times:


Mayor and City Council move to enhance safety on 35th Aven SW


Phase 2

Phase 1

Community Outreach & Engagement

We sent out a neighborhood flier in July, are holding an open house in August, and will continue public outreach into the fall. Outreach and design are scheduled to conclude this year, and then the safety corridor work, including the new signal, will be done in 2017.


Approved by voters in 2015, the 9-year, $930 million Levy to Move Seattle provides funding to improve safety for all travelers, maintain our streets and bridges, and invest in reliable, affordable travel options for a growing city.