New Hampshire Route 3A

New Hampshire Route 3A
Route 3A highlighted in blue
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 intersections	I-293 / NH 101 in Manchester US 3 in Manchester I-293 / Everett Turnpike in Manchester 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 intersections	US 3 / NH 25 in Plymouth
North end	I-93 in Plymouth
Location
Country	United States
State	New Hampshire
Counties	Hillsborough, Merrimack, Grafton
Highway system
New Hampshire Highway System Interstate US State Turnpikes
← US 3 → NH 4
← Route 5 N.E. → Route 7

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.