McMahon, as lead consultant for this estimated $1.2 million construction project, was responsible for the design of approximately 4,000 linear feet of a 10 foot wide multi‐use trail from Mantua Avenue to Fairmount Park. The construction of this trail completes the missing link of the West Bank Greenway Facility which originated from Powelton Avenue. The project is partially funded through the Transportation Enhancement Funding Program. Prior to the engineering design, McMahon worked closely with the Philadelphia Streets Department, Fairmount Park, and PennDOT on the planning and conceptual layout of the multi‐use trail which included a bridge crossing and highway crossings.
The McMahon team developed a creative design for the bridge crossing, which involves restriping the existing four lane section of the 34th Street bridge to accommodate the multi‐use trail. The multi‐use will utilize the existing six foot wide sidewalk for westbound pedestrian and bike traffic. The eastbound lane for the trail users will be striped along the existing bridge parapet and separated from the travel lane with a painted gore area. The multi‐use trail design includes the reconstruction of an existing concrete sidewalk, variable width along 34th Street with a 10‐foot wide bituminous multi‐use trail, and an ADA compliant crossing with the I‐76 west off‐ramp, and other ADA curb ramp and sidewalk improvements within the remaining project limits. Design elements include trail/sidewalk design, ADA compliance, pedestrian crossings, post construction stormwater management compliance design and incorporation of landscaping to promote the trail as a true greenway. The project tasks include environmental studies/clearance, utility coordination, preliminary engineering, final design and preparation of plans, specifications, and estimate (PS&E). The project will be submitted for bidding through PennDOT’s Engineering and Construction Management System (ECMS).