Split between two sections, the northern segment of Massachusetts Route 3A follows the pre-freeway alignment of U.S. 3 north from I-95 at Burlington to Route 113 in Tyngsborough. North from there, Route 3A transitions to NH 3A en route to Manchester and Concord.
The southern section branches east from Interstate 93, U.S. 1 & Route 3 (Southeast Expressway) through Quincy to follow a coastal route south to Duxbury. Route 3 follows a freeway southeast from Weymouth to Kingston to reconvene with Route 3A at Exit 9 and 10 west of Kingston Bay. The freeway bypasses Plymouth to the west from there while Route 3A stays toward the coast through the town center to Manomet and Ellisville. Route 3A ends at Exit 2.
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| Route 3A (South Artery) lowers from a residential neighborhood in Quincy to intersect Furnace Brook Parkway. Furnace Brook Parkway parallels Blacks Creek east to Merrymount. 07/28/07 |
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| A reassurance marker for Route 3A stands at the crossing of Blacks Creek between Furnace Creek Parkway and Merrymount Park. 07/28/07 |
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| Route 3A (Thorndike Street) passes by South Common park in Lowell as it nears a split diamond interchange with Appleton Street (Route 110), Chelmsford Street (Route 110) and Middlesex Street. 07/29/07 |
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| Thorndike Street travels northward across Pawtucket Canal to become Dutton Street toward the Lowell city center as Route 3A turns west along Westford Street to the Lowell Highlands neighborhood. 07/29/07 |
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| Route 3A south joins Thorndike Street from Route 110 (Chelmsford Street) north to run southward between the Gallagher Intermodal Center and South Common park. The state route next intersects Highland Street east. 07/29/07 |
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| Obscured by foliage, this sign references the upcoming intersection with the Lowell Connector, a 3.1 mile freeway spur from adjacent Gorham Street to U.S. 3 south through Chelmsford. 07/29/07 |
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| YMCA Drive stems west from Thorndike Street across the MBTA transit lines (via the Louis Centore Memorial Bridge) to Hale Street as the Lowell Connector overpasses come into view. 07/29/07 |
Page Updated 09-20-2016.
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