SDOT
The median gaps to permit left turns to provide access to businesses along the Fauntleroy SW corridor were presented in the final traffic study of the Fauntleroy SW Boulevard Project on May 12.

Final traffic study on Fauntleroy Blvd. Project released: Project will start in December and be completed in 2019

The Seattle Department of Transportation and the Fauntleroy SW Boulevard Project posted their final Traffic Analysis Report prepared by subcontractor DKS on May 12 in an update and it concludes that the proposed bike lanes will have little impact on signal operations, Signal timing changes at intersections along Fauntleroy Way SW and 35th Avenue SW are required to accommodate growth, The proposed additional marked crosswalks across Fauntleroy Way SW at SW Avalon Way and at SW Oregon Street are not recommended, traffic through the corridor will be "acceptable" through the year 2044, and pedestrian and bicycle volumes were assumed to double and triple respectively through 2044.

From the Summary of the report:

The proposed project will construct landscaped center medians, realigned intersections, improved street lighting, protected bike facilities and improved pedestrian facilities with defined sidewalks and new crossings of Fauntleroy Way SW.

DKS has completed a project traffic analysis of the existing, the year of opening, and the future 2044 project condition. The following summarizes the main findings of analysis:

  •  The protected bike lanes are proposed to be one‐way on both sides of the corridor and therefore should have minimal impact on the signal operations as a bike signal phase will not be required.
  •  The year of opening conditions accounts for an 8% growth which includes planned development within the next two years in the area. Signal timing changes at intersections along Fauntleroy Way SW and 35th Avenue SW are required to accommodate this growth. The signal timing adjustments, in conjunction with turn restrictions, provide acceptable LOS D or better operations in the year of opening conditions. Certain intersections experience better operations in future conditions due to optimized signal timing.
  •  The proposed additional marked crosswalks across Fauntleroy Way SW at SW Avalon Way and at SW Oregon Street are not recommended as they would require an additional signal phase for an exclusive pedestrian crossing, reducing the efficiency of the intersection operations by introducing additional pedestrian and vehicle delay at the individual intersections and to the corridor.
  •  The Fauntleroy Way SW Boulevard project is expected to allow for acceptable corridor operations through the year 2044. This is due in large part to PSRC’s new 2040 regional travel demand model which projects little vehicle traffic growth along Fauntleroy Way SW, but a 25‐33% growth in transit trips on the SW Alaska Street/35th Avenue SW transit corridor. Also, by 2040, both pedestrian and bicycle trips in this section of the City are expected to grow at approximately twice the rate of vehicle trips.
  •  To ensure a conservative analysis, pedestrian volumes were assumed to double at the intersection of SW Alaska Street/Fauntleroy Way SW Boulevard, while bicycle volumes were assumed to double along the corridor for the year of 2017. Through 2044, pedestrian volumes were assumed to double at every intersection and bicycle volumes were assumed to triple along the corridor.

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