23rd Ave E Vision Zero Project

What's happening now?

Updated April 2018

We're enhancing safety and mobility on 23rd/24th Ave E between E John St and E Roanoke St as part of our Vision Zero efforts to reach zero traffic deaths and serious injuries by 2030.

Last fall, many of you attended our public meeting or took our online survey to share your thoughts on the preliminary design (view a summary of feedback received during this outreach period).


Using feedback and looking at where speeding is most frequent, we revised the recommended design for 23rd Ave E between Boyer Ave E and E John St. The new design:

  • Maintains two southbound travel lanes
  • Adds a center turn lane
  • Goes from two northbound lanes to one


We’ll also install skid-resistant surface treatment at 24th Ave E and E Louisa St, E Lynn St, and E Helen St/Turner Way, where collision rates are high. See our recent mailer for more information.


What to expect during construction
This project is anticipated to be installed in summer 2018 and take about two weeks to complete. Detours are not anticipated and we'll work to minimize impacts as much as possible. We'll send another mailer prior to the start of construction.


What’s next
In addition to implementing the recommended design and installing skid-resistant surface treatments, we're using your feedback and conducting additional analyses to determine where we might enhance bus stops and service with a bus lane or signal changes, install a new traffic signal, modify parking, and add new curb ramps within the project area. These changes would likely happen in 2019 and be coordinated with SR 520 construction.

Sign up on our project listserv to receive project updates and learn about future public involvement opportunities. Interested in learning about transportation improvements happening on the southern end of 23rd Ave E? Visit the project website.

Project Overview

We launched the 23rd Ave E Vision Zero Project to enhance safety and mobility on 23rd Ave E and 24th Ave E between E John Street and E Roanoke Street. Vision Zero is our plan to end traffic deaths and serious injuries on City streets by 2030.

In the last three years, there have been 134 total collisions on this portion of the corridor. These crashes caused 63 injuries to people walking, biking and driving. There has been one fatal collision on this street in the last decade. This important street provides access to the Montlake neighborhood, SR 520, the Montlake Bridge crossing into north Seattle and is a vital street for transit.

The 23rd Ave corridor is currently four to five lanes with peak hour parking restrictions in some locations. There is a significant curve in the road where 23rd Ave E meets Turner Way and becomes 24th Ave E. A steep hill south of Boyer Ave E contributes to people driving faster than the posted speed limit.

People are traveling at speeds higher than 40 mph, where the posted speed limit is 30 mph.

Speed signs

We heard from the Montlake community that traffic calming, reducing speeds, and pedestrian safety are the top transportation priorities on 23rd/24th Ave E. We used data and public input to develop the preliminary design below.

Design Map

Design map illustration

Boyer Ave E to E Roanoke St

Cross section of Boyer Ave E to E Roanoke St

Where traffic volumes are high and more likely to be impacted by SR 520 construction, we are maintaining four lanes. We can evaluate changing this in the future. This area also includes the Montlake business district and we heard that maintaining on-street parking is important.


We’ll also install skid-resistant surface treatments at 24th Ave E and E Louisa St and 24th Ave E and E Lynn St, where collision rates have been relatively high.

E John St to Boyer Ave E

Lane change illustration

We're redesigning the street where traffic speeds are the highest between E John St and Boyer Ave E as soon as 2018. We've implemented these changes in other parts of the City and have seen positive results in reducing crashes and vehicles following the posted speed limit. Note that while our preliminary design included one northbound general purpose lane and one northbound transit lane, we’ve decided to remove the transit lane and replace it with a second northbound general purpose lane based on community feedback.

Redesigning a portion of the street can help reduce speeds and providing a turning lane means less back-up at intersections, or when accessing homes and businesses. The proposed design maintains efficient bus service along the street.

We’ll also install skid-resistant surface treatments at 24th Ave E and E and E Helen St/Turner Way, where collision rates have been relatively high.

Other improvements

In addition to implementing the recommended design and installing skid-resistant surface treatments, we're using your feedback and conducting additional analyses to determine where we might enhance bus stops, install a new traffic signal, modify parking, and add new curb ramps within the project area. These changes would likely happen in 2019 and be coordinated with SR 520 construction.

Other projects in the neighborhood:

We're partnering with the WA State Department of Transportation to deliver Neighborhood Traffic Management Projects related to SR 520 construction.

Schedule

Summer 2017

Share what we heard to date and suggest possible near-and long-term alternatives

Spring 2018

Share conceptual design of near-term safety improvements

Summer/Fall 2018

Construction of recommended design (E John St to Boyer Ave E) (schedule subject to change)

2019/2020

Implement corridor-wide improvements, including improvements to existing bus stops, a new traffic signal (location to be determined), potential parking modifications, new curb ramps, and sidewalk repairs (E John St to E Roanoke St)

Funding

These projects are funded by the 9-year Levy to Move Seattle, approved by voters in 2015.

Materials


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