New Hampshire Route 3A

New Hampshire Route 3A marker

New Hampshire Route 3A
Route information
Auxiliary route of US 3
Maintained by NHDOT
Length: 70.427 mi[1] (113.341 km)
Southern segment: 39.412 miles (63.427 km)
Northern segment: 31.015 miles (49.914 km)
Major junctions
South end: Route 3A in Tyngsborough, MA
 
North end: I93 / US 3 / NH 25 in Plymouth
Location
Counties: Hillsborough, Merrimack, Grafton
Highway system
US 3NH 3B
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.

Junction list

Southern segment

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

CountyLocation[1][2]mi[1][2]kmExitDestinationsNotes
HillsboroughHudson0.0000.000 Route 3A (Frost Road) TyngsboroughContinuation from Massachusetts
2.1703.492Circumferential Highway  to US 3 / Everett Turnpike – Boston, South Nashua
5.0368.105 NH 111 (Ferry Street) / NH 102 NashuaWestern terminus of NH 102; southern end of concurrency with NH 102
6.0449.727 NH 102 east (Derry Road) DerryNorthern end of concurrency with NH 102
Manchester19.214–
19.314
30.922–
31.083
I293 / NH 101 Salem, Concord, PortsmouthExit 2 on I-293
21.25734.210 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
I293 / 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
23.29037.4825Granite Street
24.47239.3846Amoskeag Bridge / Goffstown Road
24.90840.086 I293 / Everett TurnpikeExit 7 on I-293; northern end of concurrency with I-293; northbound exit and southbound entrance
MerrimackHooksett27.298–
27.673
43.932–
44.535
I93 Boston, Concord, Plymouth*Exit 10 on I-93
30.86749.676Hackett Hill Road to To I93 Concord, Manchester*Exit 11 on I-93
Bow37.60160.513 I89 north Bow, LebanonSouthern terminus of I-89
Concord38.003–
38.340
61.160–
61.702
I93 Tilton, Plymouth, Manchester*Exit 12 on I-93
39.41263.427 US 3 (Water Street / South Main Street)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

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

Northern segment

CountyLocation[1][3]mi[1][3]kmDestinationsNotes
MerrimackFranklin0.0000.000 US 3 / NH 127 north / NH 11 east (Central Avenue)
US 3 (South Main Street) / NH 127 south
Southern terminus of northern segment; southern end of concurrency with NH 11
1.0201.642 NH 11 west (Webster Lake Road) AndoverNorthern end of concurrency with NH 11
GraftonBristol13.10921.097 NH 104 east (Summer Street) New HamptonSouthern end of concurrency with NH 104
13.30521.412 NH 104 west (Pleasant Street) DanburyNorthern end of concurrency with NH 104
Plymouth27.00943.467 NH 25 west Rumney, WoodsvilleSouthern end of concurrency with NH 25
30.54749.161 US 3 / NH 25 east (Main Street) PlymouthInterchange; northern end of concurrency with NH 25
31.01549.914 I93 (Styles Bridges Highway) Littleton, ConcordNorthern terminus; Exit 26 on I-93
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

External links

Southern segment

Northern segment