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US 7
US 7 General Routing CT line in Ashley Falls to VT line in Williamstown via Great Barrinton and Pittsfield. Upgrades and Multiplexes Multiplexed with US 20 between Lenox and Pittsfield.
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US 20
US 20 General Routing NY line in Pittsfield to Boston via Springfield, Auburn, Marlborough, Waltham and Watertown. Upgrades and Multiplexes Cosigned with US 7 from Pittsfield to Lenox.
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US 3
US 3 General Routing Cambridge to NH line at Tyngsboro via Arlington, Burlington and Lowell. Upgrades and Multiplexes Limited access highway north of I-95. Reverse multiplex with I-95.
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US 1
US 1 General Routing RI border in Attleboro to NH border in Salisbury via N. Attleboro, Norwood, Boston, Revere, Danvers and Newburyport. Upgrades and Multiplexes Paired along I-95 as a reverse multiplex in Norwood and Canton.
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US 202
US 202 General Routing CT line in Southwich to NH line in Winchendon via Holyoke and Shutesbury Upgrades and Multiplexes
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US 6
US 6 General Routing RI border in Seekonk to Provincetown via Fall River, New Bedford, Buzzard’s Bay, Sagamore and Orleans. Upgrades and Multiplexes Expressway/Super-2 from Sagamore to Orleans. Brief multiplex with MA 114A in Seekonk.
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US 5A
US 5A retired General Routing CT line in Agawam to Springfield History
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US 5
US 5 General Routing CT line in Longmeadow to VT line in N. Bernardston via Springfield, Holyoke, Northampton ande Greenfield. Upgrades and Multiplexes Brief multiplex with I-91 in Springfield.
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US 44
US 44 General Routing RI line in Seekonk to Plymouth via Taunton Upgrades and Multiplexes Brief multiplex with MA 140 in Taunton. Cosigned with MA 3 in Plymouth.