16-161 - King County Parks and Recreation Division - Baker Boulevard Non Motorized Improvements

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Exhibit B Mobility Connections Improvements on Baker Boulevard The Baker Boulevard project site is approximately 1,300 feet in length and the street is designated as a Collector Arterial in the Tukwila Comprehensive Plan. All Baker Boulevard street right -of -way is within and owned by the City of Tukwila. The City's proposed rechannelization plan for Baker Boulevard between Andover Park W. and Christensen Road is shown in Exhibit C. The alternative bicycle /pedestrian improvements proposed by the County on Baker Boulevard are shown in Exhibit D and are consistent with the Tukwila Mobility Connections concept (March 2016), King County DNRP, Baker Boulevard — King County Proposal Option 1 Buffered Bike Lanes (Option 1). These improvements modify the City's proposed rechannelization plan. Proposed modifications include: • Reduce the width of the parking lane between Andover Park W. and Andover Park E. to 8.0 feet; • Change the proposed 6.0 -foot conventional bike lanes between Andover Park W. and Andover Park E. to 6.5 -foot buffered bike lanes. 6.5 -foot buffered bike lanes to include 5.0 -foot bike lane with 1.5 foot, half chevron painted buffer area; • Maintain the full width of the 6.5 -foot buffered bike lanes at both the westbound approach to Andover Park W and the eastbound approach to Andover Park E by reducing vehicle travel lanes widths to those outlined in Exhibit D or other dimensions based on best engineering judgement; • Ensure the eastbound buffered bike lane is striped along its entire length between Andover Park W. and Andover Park E.; • Reduce the width of vehicle travel lanes between Andover Park E. and Christensen Road to 12.0 feet; • Change the proposed 6.0 -foot conventional bike lanes between Andover Park E. and Christensen Road to 7.5 -foot buffered bike lanes. 7.5 -foot buffered bike lanes to include 5.5 -foot bike lane with 2.0 foot, half chevron painted buffer area; • Install green - colored markings in buffered bike lane at the westbound mixing zone at approach to Andover Park W.; • Install bike boxes with green - colored markings at eastbound and westbound approaches to Andover Park E; and • Green- colored markings may be paint, MMA /Epoxy or Thermoplastic based on the City's engineering and maintenance preferences. The City will use these proposed modifications to produce a final rechannelization plan for Baker Boulevard for review and approval by the County prior to implementation. Interagency Agreement for the Development of Mobility Connections Facilities on Baker Boulevard and Christensen Road Page 10