23rd Vision Zero work kicks off!

We’re enhancing safety and mobility on 23rd Ave E/24th Ave E, a key corridor connecting the University District and Capitol Hill. It’s part of our Vision Zero plan to end traffic deaths and serious injuries on city streets by 2030.


Data shows that people driving northbound between Boyer Ave E and E John St average 39 MPH. The posted speed is 30 MPH. The chances of someone being fatally or seriously injured increase significantly when struck at 40 MPH versus 30 MPH.


To improve safety for people walking, biking, and driving this corridor, we are converting one northbound lane of 23rd/24th avenues E to a center turn lane, from E John St to Boyer Ave E. The change encourages speeds closer to 30 MPH.

Work kicks off this week with spray-painting the street to mark the new traffic layout; removing old markings; and laying permanent traffic lines. Next week crews  install signs and finish details.


Similar design changes in other parts of the City have resulted in reduced vehicle crashes, and more drivers following the posted speed limit.



What you can expect:

The will work will be done in two phases, over 2018 and 2019. The first phase happens this month.

Monday, August 20 – Thursday, August 23 | 7 AM – 10 PM

Friday, August 24 – Saturday, August 25 | 9 AM – 10 PM

Monday, August 27 – Friday, August 31 | 7 AM to 10 PM

Crews may be on site up to 1 hour before or after noted work times, for prep and wrap-up.



  • Traffic reduced to 1 lane in each direction, NB and SB.
  • Occasional lane shifts around the work zone, as needed.



Contact us.

For more info about the 23rd Ave Corridor Improvements, visit our website, email us at 23rdAveCorridor@seattle.gov or call the project info line at 206.727.8857.