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South Ballard Corridor Safety Improvements Project

Update: December 17, 2013

This weekend Seattle Department of Transportation crews will restripe and sign Shilshole Ave NW/NW 45th Street, between NW 46th Street and 11th Avenue NW, making it one-way eastbound for motor vehicles. This South Ballard Corridor Safety Improvements work will also configure the roadway segment to include a separate two-way bicycle lane to the north and all-way stops at both 14th Avenue NW at NW 45th Street and NW 46th Street. The roadway change addresses longstanding safety concerns.

  • Crews begin work at 6pm December 20th with completion expected by Sunday evening, December 22, 2013

Westbound motor vehicle traffic will be detoured onto NW 46th Street at 11th Avenue NW.  Eastbound traffic may experience intermittent slowdowns.

The one-way eastbound solution comes after collaboration with area businesses. Access to all businesses will be maintained, with some routing changes due to the new one-way eastbound direction.

Project Overview

http://www.seattle.gov/transportation/images/nw45th.jpgThe South Ballard Corridor Safety Improvements Project addresses longstanding pedestrian and cyclist safety concerns. City records show there were 45 bicycle crashes that were responded to on Northwest 45th Street alone, between 11th Avenue and Shilshole Avenue NW, in a four year period (2008-2011). That location, part of the Burke-Gilman Trail "Missing Link," is one of the highest bicycle collision locations in the city.

Local transportation dollars are funding the improvements, some of which were called for in a 2002 South Ballard Transportation Corridor Study done by Heffron Transportation, Inc.

An initial plan called for restriping to create bicycle advisory lanes along NW 45th Street (between 11th Ave NW and Shilshole Ave NW) and Shilshole Ave NW (between NW 45th ST and NW 46th ST). That plan was updated with input from area businesses. The current plan is to restripe and sign Shilshole Ave NW/NW 45th Street, between NW 46th Street and 11th Avenue NW, making it one-way eastbound for motor vehicles with a separate two-way bicycle lane to the north and all-way stops at both 14th Avenue NW at NW 45th Street and NW 46th Street, as shown below.

Other safety improvements made recently include:

  • Curb islands at bridge abutments at NW 45th Street and 15th Avenue NW, under the Ballard Bridge
  • New intersection signage at Ballard Avenue NW and NW 48th Street and at Ballard Avenue NW and 17th Avenue NW
  • New speed limit sign on Shilshole Avenue NW and NW 45th Street between NW 46th St and 11th Ave NW2. Ballard Ave NW and 17th Ave NW

Remaining planned improvements include:

Work to install a curb ramp at 24th Ave NW and repair the roadway shoulder along Shilshole Ave NW is not scheduled for this year. Construction schedule is yet to be determined.

Project Benefits

The South Ballard Corridor Safety Improvements Project has several benefits, including clarifying roadway operations for all users. Overall the benefits are:

  • Enhanced predictability for road users, increasing safety
  • Slowing of vehicles on local streets
  • Enhanced line of sight for vehicles
  • Increased pedestrian safety at crossings

Project Contacts

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