As-built plans (engineering, maintenance, and operations scheduled item), 1957-[ongoing].

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As-built plans (engineering, maintenance, and operations scheduled item), 1957-[ongoing].

http://www.worldcat.org/oclc/122581630

The Massachusetts Turnpike Authority is responsible for the maintenance and operation of the Massachusetts Turnpike, Boston extension, and Callahan Tunnel to East Boston, all of which it constructed, and of the Sumner Tunnel from East Boston. As-built plans are kept by its engineering, maintenance, and operations unit to document all construction for reference in case of future construction or reconstruction.

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Commonwealth of Massachusetts State Archives

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SNAC Resource ID: 6775583

Commonwealth of Massachusetts State Archives

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Massachusetts Turnpike Authority

http://n2t.net/ark:/99166/w66t5ghc (corporateBody)

The Massachusetts Turnpike Authority is responsible for the maintenance and operation of the Massachusetts Turnpike, Boston extension, and Callahan Tunnel to East Boston, all of which it constructed, and of the Sumner Tunnel from East Boston. Planning for the demolition of a related road system, the Boston central artery, known officially as the John F. Fitzgerald Expressway, and its replacement with an underground central artery, began in 1982. The Central Artery/Tunnel Project, known informall...