MORGAN / SYLVAN WAY CORRIDOR | SEATTLE, WA

MORGAN / SYLVAN WAY CORRIDOR | SEATTLE, WA

Owner: Seattle Department of Transportation 
Client: Mithun, Seattle Housing Authority
SvR Role: Landscape Architecture & Civil Engineering
Construction Cost: $3.3 million
Start Date: 2004
End Date: 2009
Recognition: FHWA Context Sensitive Solution - Selected National Project for Training

As lead civil engineer and landscape architect, SvR designed a retrofit of five blocks of the SW Morgan / Sylvan Way corridor, one of the country’s examples of a green, complete street and a context sensitive solution. Transit, residents, police and fire, delivery trucks, and school buses use this east-west arterial. Trips range upward of 8,500 vehicles per day. The corridor features bioinfiltration swales, sidewalks, a center-planted median, art, transit stops, and bicycle sharrows. The design also included signage, a traffic signal, water and sanitary sewer distribution, landscaping, and power and franchise undergrounding.

SvR worked with many stakeholders to design a street that met the neighborhood’s vision for connectivity and addressed the functional issues of sight distance. The City was reluctant to allow a signal until the team demonstrated that the multiple users and road geometry met the need for signalization. The design allows users to understand that they are driving through a neighborhood. Vehicle speeds are now within the posted 25 mph.

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