New Hampshire Route 3A

New Hampshire Route 3A
Route information
Auxiliary route of US 3
Maintained by NHDOT
Southern segment
Length:	39.412 mi[1] (63.427 km)
South end:	Route 3A in Tyngsborough, MA
Major junctions:	I‑293 / NH 101 in Manchester US 3 in Manchester I‑293 / Everett Turnpike in Manchester I‑93 in Hooksett and Concord I‑89 in Bow
North end:	US 3 in Concord
Northern segment
Length:	31.015 mi[1] (49.914 km)
South end:	US 3 / NH 11 / NH 127 in Franklin
Major junctions:	US 3 / NH 25 in Plymouth
North end:	I‑93 in Plymouth
Location
Counties:	Hillsborough, Merrimack, Grafton
Highway system
New Hampshire Highway System Interstate U.S. State Turnpikes ← US 3 NH 4 →

Old style Route 3A shield, still seen widely throughout the state

New Hampshire Route 3A is a designation held by two separate state highways in New Hampshire. The two segments, although not directly connected, are linked by U.S. Route 3, from which they derive their route number.

Route description

Southern segment

The southern terminus of the 39.40-mile (63.41 km) long southern segment is at the Massachusetts state line in Hudson, where it continues as Route 3A. The northern terminus is in the city of Concord at US 3. This segment of NH 3A follows the Merrimack River for its entire length. The route begins in Hudson at the Massachusetts line. It shortly intersects with the eastern end of the Circumferential Highway (which provides access to US 3 and the Everett Turnpike). NH 3A passes through downtown Hudson, where it intersects with NH 111 just across the river from downtown Nashua. NH 102 begins at this intersection and is cosigned with NH 3A for its first mile, before splitting off northeast towards Londonderry. NH 3A continues along the eastern banks of the river, through Litchfield and into the city of Manchester, where it crosses under I-293/NH 101 and follows a short surface alignment in the southwest section of town. NH 3A intersects with US 3 and is actually cosigned with it (in a wrong-way concurrency on Queen City Ave across the river, where the two routes intersect NH 114A at its eastern terminus. At this point, NH 3A leaves US 3 and merges onto I-293 northbound (which also carries the Everett Turnpike) at exit 4. NH 3A is concurrent with I-293 for three miles, departing at exit 7 and crossing into Hooksett. The highway immediately interchanges with I-93 (which it parallels for the remainder of its length) near the northern terminus of I-293, and continues north (now paralleling on the west side of the river). Hackett Hill Road provides another access point to I-93, while nearby Main Street connects to US 3/NH 28 across the river. NH 3A enters Bow and meets the southern end of the I-89 freeway (another access point to I-93) before crossing into the city limits of Concord. The highway interchanges with I-93 one last time before ending at US 3 just south of downtown Concord.

Northern segment

The southern terminus of the 30.93-mile (49.78 km) long northern segment is in the city of Franklin at US 3, New Hampshire Route 11, and New Hampshire Route 127. The northern terminus is in the town of Plymouth at an interchange with Interstate 93, US 3 and New Hampshire Route 25.

History

From 1922 to 1926, Route 3A was part of the New England road marking system as New England Route 6A (NE-6A). In 1926, all roads designated as NE-6A were changed to New Hampshire Route 3A and Massachusetts Route 3A to accommodate the change of New England Route 6 to U.S. Route 3.

Junction list

Southern segment

Note that NH 3A is unsigned along its concurrency with I-293 in Manchester.

County	Location[1][2]	mi[1][2]	km	Destinations	Notes
Hillsborough	Hudson	0.000	0.000	Route 3A (Frost Road) – Tyngsborough	Continuation from Massachusetts
		2.170	3.492	Circumferential Highway  to US 3 / Everett Turnpike – Boston, South Nashua
		5.036	8.105	NH 111 (Ferry Street) / NH 102 – Nashua	Western terminus of NH 102; southern end of concurrency with NH 102
		6.044	9.727	NH 102 east (Derry Road) – Derry	Northern end of concurrency with NH 102
	Manchester	19.214– 19.314	30.922– 31.083	I‑293 / NH 101 – Salem, Concord, Portsmouth	Exit 2 on I-293
		21.257	34.210	US 3 north (Elm Street)	Southern end of wrong-way concurrency with US 3
		21.900– 21.918	35.245– 35.274	US 3 south (Second Street) / NH 114A I‑293 / Everett Turnpike – Concord, Boston	Northern end of wrong-way concurrency with US 3; southern end of concurrency with I-293 Exit 4 on I-293; eastern terminus of NH 114A
		23.290	37.482	Granite Street	Exit 5 on I-293
		24.472	39.384	Amoskeag Bridge / Goffstown Road	Exit 6 on I-293
		24.908	40.086	I‑293 / Everett Turnpike	Exit 7 on I-293; northern end of concurrency with I-293; northbound exit and southbound entrance
Merrimack	Hooksett	27.298– 27.673	43.932– 44.535	I‑93 – Boston, Concord, Plymouth*	Exit 10 on I-93
		30.867	49.676	Hackett Hill Road to To I‑93 – Concord, Manchester*	Exit 11 on I-93
	Bow	37.601	60.513	I‑89 north – Bow, Lebanon	Southern terminus of I-89
	Concord	38.003– 38.340	61.160– 61.702	I‑93 – Tilton, Plymouth, Manchester*	Exit 12 on I-93
		39.412	63.427	US 3 (Water Street / South Main Street)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

*The Everett Turnpike is unsigned along I-93 from the I-293 interchange to its northern terminus in Concord at exit 14

Northern segment

County	Location[1][3]	mi[1][3]	km	Destinations	Notes
Merrimack	Franklin	0.000	0.000	US 3 / NH 127 north / NH 11 east (Central Street) US 3 (South Main Street) / NH 127 south	Southern terminus of northern segment; southern end of concurrency with NH 11
		1.020	1.642	NH 11 west (Webster Lake Road) – Andover	Northern end of concurrency with NH 11
Grafton	Bristol	13.109	21.097	NH 104 east (Summer Street) – New Hampton	Southern end of concurrency with NH 104
		13.305	21.412	NH 104 west (Pleasant Street) – Danbury	Northern end of concurrency with NH 104
	Plymouth	27.009	43.467	NH 25 west – Rumney, Woodsville	Southern end of concurrency with NH 25
		30.547	49.161	US 3 / NH 25 east (Main Street) – Plymouth	Interchange; northern end of concurrency with NH 25
		31.015	49.914	I‑93 (Styles Bridges Highway) – Littleton, Concord	Northern terminus; Exit 26 on I-93
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

References

External links

Southern segment

• Map of southern terminus
• Map of northern terminus

Northern segment

• Map of southern terminus
• Map of northern terminus