Memorial Bridge, Portsmouth, N.H., Restoring the Soul of the Community

In January 2011, the Memorial Bridge connecting Portsmouth, N.H., and Kittery, Maine, was permanently closed after 88 years of service. Although anticipated, the closure severely disrupted lives on both banks, given the interconnectedness of these two communities Carrying U.S. Highway 1 over the Piscataqua River, this vertical-lift bridge accommodates 12,000 vehicles a day. The challenge was how to replace the bridge as quickly as possible and minimize the impact to residents and businesses. Using design-build as the contracting method, the project was the largest highway and bridge contract in NHDOT history and the state's first significant design-build job. Contractor Archer Western Contractors and designer HNTB Corp. were awarded the project based on innovative, efficient design and a promise to deliver the new structure in 18 months. Using a dynamic, collaborative and pioneering approach, the HNTB team delivered a new generation of bridge design that reduces fabrication costs and time-to-build. The new Memorial Bridge opened to traffic in August 2013.
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