The Spaulding Turnpike is a north-south toll road in eastern New Hampshire. Nearly its entire length is overlapped by New Hampshire Route 16. Its southern terminus is at the Portsmouth Traffic Circle (Interstate 95 / U.S. Route 1 Bypass) in Portsmouth, a terminus it shares with U.S. Route 4 and NH 16. Its northern terminus is at an interchange with New Hampshire Route 125 in Milton, where NH 16 continues north as a full-access highway. The turnpike roughly parallels the Maine border. NH 16 was signed onto the Turnpike in the mid-1990s. The turnpike is part of the New Hampshire Turnpike System operated by the New Hampshire Department of Transportation Bureau of Turnpikes. Along with I-95 between the Massachusetts state border and the Portsmouth Circle (Blue Star Turnpike), the two turnpikes are collectively known as the Eastern Turnpike. History The turnpike is named for the Spaulding brothers of Rochester—Rolland H. Spaulding (1873–1942) and Huntley N. Spaulding (1869–1955)—who both served as Governor of New Hampshire. It was announced in August 1952 to connect Portsmouth and Rochester at a cost of $13.5 million. Work on the first section of the turnpike, between Portsmouth and Dover, started in 1954, with that segment opening in September 1956. The complete (as originally planned) route between Portsmouth and Rochester opened on August 29, 1957, the same day that the Everett Turnpike was dedicated. In 1977, the New Hampshire House of Representatives approved funding to extend the Spaulding Turnpike by north through Milton. Construction began in 1978, with the extension opening on August 20, 1981. Route description The Spaulding Turnpike begins in Portsmouth, at I-95 northbound Exit 4. Access from I-95 south and US 1 Bypass is facilitated via Exit 5 (Portsmouth Traffic Circle). A northbound-only exit connects with Brady Drive, accessible only from the traffic circle. The Spaulding Turnpike becomes a six lane freeway concurrent with US 4 and NH 16, with a speed limit. Exit 1 in Newington provides access to Pease International Tradeport and the Newington malls. Exit 2, a northbound-only exit/entrance which facilitated access to the Mall at Fox Run and adjacent businesses, was closed permanently on July 19, 2015. Exit 3 is a full-access interchange with Woodbury Avenue, with a connection to Pease Tradeport via Arboretum Drive. Exit 4 provides access to Newington Village and businesses along Shattuck Way. The turnpike then crosses the Little Bay Bridge into Dover, with seven lanes