The McGrath Boulevard project is a continuation of the “Grounding McGrath” study which examined the removal of the McCarthy Viaduct in the City of Somerville. McMahon led the “Grounding McGrath” team and this project focuses on the continued evaluation of the preferred boulevard alternative identified in the “Grounding McGrath” study. The goal of the project continues to be the improvement of transportation infrastructure, while promoting community connectivity, accessibility across all transportation modes, economic development, and community engagement. The evaluation of the boulevard alternative includes a multi-faceted review of potential vehicular, pedestrian, bicycle and transit infrastructure and operations. Updated traffic projections have been identified through coordination with MassDOT and the Central Transportation Planning Staff to understand all transportation modes and analyze the impacts of the proposed boulevard alternative. The analysis of the boulevard alternative also includes refinement of intersection and lane configurations of the previously identified boulevard alternative through coordination with MassDOT, the City of Somerville and the community. The project will result in the completion of a conceptual design plan, providing a basis for future design efforts for the removal of the McCarthy Viaduct.
McMahon also prepared an environmental evaluation and will be preparing National Environmental Policy Act (NEPA) and Massachusetts Environmental Policy Act (MEPA) compliance documents for the removal of the elevated highway and its replacement with an at-grade boulevard. A detailed alternatives analysis is being conducted to refine the preferred alternative, which includes consideration of vehicular, pedestrian, bicycle, and transit operations. Key environmental issues include traffic, air quality, noise and historic resources within the urban project corridor. The alternatives analysis involved a robust public participation process that includes a working advisory group of project stakeholders as well as broader public meetings.