15th Ave S and S Columbian Way Intersection Revision

Project Updates

Updated Design

Based on community feedback, we plan to keep the left turn from S Oregon St onto 15th Ave S. Although the turn will be un-signalized, we plan to add an all-way stop at 15th Ave S and S Snoqualmie St to support a protected left-turn movement onto 15th Ave S.

We understand that for some of you, this configuration is not ideal. Retaining a signalized left turn from S Oregon St to 15th Ave S in the future intersection design would have created several other potential issues including increased neighborhood traffic due to delays on the arterials, inefficient crossing movements for people walking, and decreased response time for emergency vehicles due to congestion.

The goal of the recommended improvements is to improve safety for all travelers at the intersection by simplifying connections and reducing conflicts, while still maintaining traffic flow.

Through our online survey, emails, phone calls, and in-person meetings, a number of neighbors said that removing the protected left turn onto 15th Ave S from S Oregon St would restrict their access to downtown and I-5 and increase cut-through traffic.

Alternatives Considered

You can learn about the alternatives we considered here. We looked at four potential alternatives, two of which were submitted by community members. In short, three of the four were not selected because they increased traffic delays on arterials, added pedestrian and vehicle conflicts, and/or did not achieve the project goals of making the intersection safer for all users and simplifying the intersection.

Plaza Space

A key component to achieving the goal of increasing safety for all users at the intersection was to shorten the crossing distance and reduce the number of crossings for pedestrians. As a result of the new intersection design, the space at the northwest corner of the S Oregon St and 15th Ave S intersection will be consolidated. This consolidation will create a new usable space. We would like to activate this space with a public plaza.

Email us your questions or comments: NSF15andColumbian@seattle.gov
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Site Photos

Site Photo
15th Ave S and S Columbian Way intersection before improvements

Project Description

The Seattle Department of Transportation (SDOT) will make improvements to the 15th Ave S and S Columbian Way Intersection to improve safety for people walking and biking around this intersection in Beacon Hill. Currently, people walking and biking, including Mercer Middle School students, must contend with confusing routes for getting from one side of the street to the other and may have to cross streets three times. The intersection can also be confusing for people driving. In 2016, the 15th Ave S and Columbian Way Intersection Improvements project was one of 12 selected by the Levy to Move Seattle Oversight Committee to be funded through the SDOT’s Neighborhood Street Fund (NSF) program. The NSF program funds projects requested by the community.

Project Elements

  • New curb bulbs
  • Crossing and signal consolidation
  • Turn restrictions at 15th Ave S and S Oregon St; motorists will only be able to make right turns into and out of S Oregon St from 15th Ave S
  • A new public space at the northwest and southwest corners of the redesigned intersection
  • Improved connections to bicycle facilities to the north, west and south
  • Replace on-street parking
  • Consider adding an all-way stop at S Snoqualmie St

Related projects

There are a number of improvements being made in this area, including paving a section of S Columbian Way in 2018, considering if we can improve the bike connection along S Columbian Way between this intersection and Beacon Ave S, where the paving project is happening, and creating a family friendly connection (neighborhood greenway) between Beacon Hill and Mt. Baker neighborhoods. We'll coordinate outreach efforts so that you get the full story and don't have to talk to multiple people at different times.

Design Concept

Design

Proposed Plaza Concept

Proposed Plaza Concept

Project Benefits

When complete, this project will:

  • Increase safety at the intersection for students and other people walking and biking
  • Reduce confusion for drivers at the intersection
  • Improve transit stops
  • Provide public space for the community to enjoy
  • Allow for protected turns at S Snoqualmie St and 15th Ave S

Project Schedule

2016

NSF applications and projects selection

2017

Project design

2018

Proejct construction

2019

NSF applications and projects selection (new cycle)

Project Library

May 2 Drop-in Session NSF Exhibit Boards
May 2 Drop-in Session S Columbian Way Protected Bike Lane Exhibit Boards
May 2 Drop-in Session Door Hanger Announcement
Mercer Middle School PTSA Presentation
Beacon Hill Council Presentation, April 4, 2017
Fact Sheet – March 2017
SDOT Project Review Document
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Project Funding

Funding comes from the 2015 voter-approved, nine-year Levy to Move Seattle, which will improve safety for all travelers, maintain streets and bridges, and invest in reliable, affordable travel options for a growing city. The levy includes $24 million to continue the Neighborhood Street Fund program over the nine years.

This project also is receiving funding from SDOT’s Safe Routes to School Program, which makes it easier and safer for students to walk and bike in Seattle.

Public Outreach and Engagement

We are committed to keeping you informed throughout the life of the project. You can expect outreach to students and parents at Mercer Middle School, intersection travelers, and adjacent project neighbors and businesses in 2017. Later this year, when the design is further along, we will likely hold a public meeting to present the detailed intersection design and seek your feedback.

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We are designing and building a transportation project proposed by your neighbors to make it safer for people walking and biking and to strengthen community. To learn more about the project or request translations call (206) 451-8191.

Estamos disenando y construyendo un proyecto de transporte propuesto por nuestros vecinos a fin de que sea mas seguro para que las personas caminen y monten bicicleta y asimismo fortalecer a la comunidad. Para obtener mayor informacion acerca del proyecto o para solicitar transporte llamar a: (206) 451-8191.

Chúng tôi đang thiết kế và xây dựng một dự án giao thông đề xuất bởi chính những người hàng xóm của quý vị nhằm làm cho việc đi bộ và đi xe đạp trở nên an toàn hơn và cộng đồng vững mạnh hơn. Để tìm hiểu thêm về dự án hoặc yêu cầu các bản dịch, hãy gọi (206) 451-8191.

我們正在設計並建造一個由您的鄰居提議的交通計畫,這個計畫旨在改善人們的步行及騎車安全,並強化社區。 如需進一步瞭解這項計畫,或是申請翻譯服務,請撥打(206) 451-8191.

我们正在设计并建造一个由您的邻居提议的交通计划,这个计划旨在改善人们的步行及骑车安全,并强化社区。 如需进一步了解这项计划,或是申请翻译服务,请拨打 (206) 451-8191.

በእግራቸው ለሚጓዙ እና ብስክሌት ለሚጋልቡ ሰዎች ይበልጥ ለደኅንነታቸው አስተማማኝ እንዲሆን በእርስዎ ጎረቤቶች በቀረበ ንድፈ ሐሳብ ላይ በመመርኮዝ የትራንስፖርት አገልግሎት ፕሮጄክትን በመንደፍ እና በማዘጋጀት ላይ ነን። ስለ ፕሮጄክቱ የበለጠ ለማወቅ ወይም ትርጉም አገልግሎት ለማግኘት ጥያቄ ለማቅረብ ወደዚህ ይደውሉ :(206) 451-8191.

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