MA-4
MA-4 may refer to: * * Massachusetts Route 4 * Mercury-Atlas 4 Mercury-Atlas 4 was an uncrewed spaceflight of the Mercury program. It was launched on September 13, 1961, at 14:09 UTC from Launch Complex 14 at Cape Canaveral, Florida. A Crewman Simulator instrument package was aboard. The craft orbited the Ea ...

Massachusetts Route 4
Route 4 is an state highway in northeastern Massachusetts. It runs south to north, serving many of Boston's western and northwestern suburbs, from an interchange with Route 2 in Lexington northwest to an intersection with Route 3A in North Chelmsford. Much of it, north of Lexington, runs parallel to U.S. Route 3 (the Northwest Expressway). The entire route is contained within Middlesex County. Route description Concurrency with Route 225 Route 4 begins at Route 2's Exit 131 interchange in Lexington, just west of the border with Arlington. This interchange also serves as Route 225's eastern terminus, and the two routes begin overlapped with one another. Routes 4 and 225 proceed northward on Watertown Street, turning onto Massachusetts Avenue and meeting Route 2A in East Lexington, briefly sharing pavement with it. The two routes continue through the center of Lexington, where Mass Ave splits to the west, and Routes 4 and 225 continue northwest on Bedford Street. The c ...
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