Maplewood Avenue

Maplewood Ave

Maplewood Avenue is a major feeder route into and out of downtown Portsmouth from the west. It runs through the City’s Historic District and borders the existing commercial core of the central business district. Development pressures, though, are pushing the urban fabric outward and the street’s prominence is increasing as a means of access for all modes of travel to these new destinations.

As a result, the City became interested in implementing its new Complete Streets Policy and Guidance Document by creating a repurposed corridor from Congress Street to the bridge over North Mill Pond for all modes of travel – pedestrians, bikes, transit, and motorized vehicles. Striking a new balance in mobility among modes is the project’s objective

A Design Team led by Sebago Technics was retained in 2017 to work with the City and eight (8) commercial developers along the corridor to develop a new street and streetscape that complimented this new vision of City Planners and private developers. The Sebago Team includes traffic and roadway engineers from the firm combined with urban planners and streetscape designers from Harriman, and bicycle facility designers from Alta Planning + Design.

The assignment is being conducted in three distinct phases: Conceptual Design, Preliminary Design, and Final Design. The Conceptual Phase will be completed at the end of January 2018. To date a total of 13 alternatives have been evaluated. These have included various alternatives for accommodating bicyclists, on-street parking, and streetscape elements. The Design Team has worked closely with City staff to screen these initial alternatives and will be presenting the final two to the general public in mid-January. From there a “preferred alternative” will be selected and the Preliminary Design will commence.

We also performed a Phase 1 Environmental Site Assessment for the existing toll plaza and administration building to determine potential environmental liabilities associated with redevelopment of the parcel. This was primarily done to determine existing environmental hazards that might be encountered during demolition.

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Project Details

City of Portsmouth
Portsmouth, NH
Date Completed:
Preliminary Design Completed in 2019
Harriman, Alta Planning + Design, Altus Engineering, S.W. Cole Engineering, Inc.
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