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Delridge/Highland Park Neighborhood Greenway

Creating a network of family-friendly residential streets

November 5, 2014


Seattle is building a network of neighborhood greenways. Neighborhood greenways are safer, calmer residential streets for you, your family, neighbors and customers. On streets with low car volumes and speeds, a greenway can:

  • Improve safety
  • Help people cross busy streets
  • Discourage cut-thru traffic
  • Protect the residential character of our neighborhoods
  • Keep vehicle speeds low
  • Get people to where they want to go (e.g., parks, schools, shops and restaurants)

Neighborhood greenways are not car-free zones; they do not add bike lanes; and there are minimal, if any, on-street parking impacts.

Potential features of greenways include:

  • Pavement markings and signage to alert motorists to expect people biking and walking
  • Improved crossings to make it easier for pedestrians and bike riders to cross intersections
  • Adding way-finding signs to let greenway users know where they are and how far their destination may be
  • Installing median islands, traffic circles, curb bulbs and/or speed hump, where needed, to help keep speeds low and drivers from using neighborhood streets as alternatives to arterials

Project Description

The project consists of constructing various elements, including curb ramps, curb bulbs (to expand the sidewalk at the corner of an intersection), speed humps, wider, shared-use walking and biking paths, a pedestrian crossing signal in the approximately 4-mile stretch between White Center (in the south) and the West Seattle Bridge trail (in the north). The greenway route will run generally along 17th Avenue SW in the south and 21st Avenue SW in the north. The greenway will start at Delridge Way SW and 17th Avenue SW at the south end, then go east onto SW Kenyon Street, north onto 15th Avenue SW, west onto SW Webster Street, then north on 17th Avenue SW again (going through a cul-de-sac), until it goes west onto SW Myrtle Street for a couple of blocks, then finally north onto 21st Avenue SW before going west on SW Andover Street for a block, then north onto 22nd Avenue SW  to meet up with the West Seattle Bridge (Alki) Trail. There are also potential east-west neighborhood greenway routes being considered for implementation in the future.

The greenway route was selected based on various factors, including evaluating streets for low car volumes, speeds and collisions, road grade (or steepness), and input we heard from the community.

SDOT is working with Seattle Public Utilities (SPU) to find opportunities to combine a greenway with natural drainage – rain gardens built along the edges of streets – along 17th Avenue SW between SW Henderson and SW Kenyon streets.

Public Outreach

In 2013, the City conducted a survey and held two public meetings to identify the most promising route and safety improvements for a neighborhood greenway in the Delridge/Highland Park community. We received valuable feedback on traffic safety concerns, destinations where people want to walk and bike to, as well as known drainage and sewer backup problems. After analyzing data and reviewing public input, the most-promising greenway route was determined to be 17th Avenue SW from Roxbury to SW Kenyon or Holden Streets and 21st Avenue SW on the north end.

Project outreach has included:

  • Neighborhood survey responses (we received more than 280)
  • July 9, 2013 public meeting (where more than 80 people participated)
  • November 19, 2013 public meeting
  • Meetings with community groups

Staff also walked and biked around your neighborhood to review different routes and observe locations and grades. Other information considered included traffic volume, speed, and collision data.

Project Funding

Project design of the neighborhood greenway is locally funded by the nine-year voter-approved Bridging the Gap Levy. The project budget is $3.8 million.

The natural drainage portion of the project is being funded by SPU.

Project Schedule

Final design is expected in spring 2015. Greenway construction is anticipated to begin in July 2015 and take approximately five months to complete.

Visit SPU’s Web page to learn more about the schedule to construct natural drainage infrastructure on 17th Avenue SW in Delridge.

Past Outreach and Materials

Project Contacts

Art Brochet, Communications Lead, art.brochet@seattle.gov or (206) 615-0786

CJ Holt, Project Manager, cj.holt@seattle.gov or (206) 233-1556

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