New Hampshire Route 13
Map of southern New Hampshire with NH 13 highlighted in red
Route information
Maintained by NHDOT
Length	43.368 mi[1] (69.794 km)
Major junctions
South end	Route 13 in Townsend, MA
Major intersections	NH 101 in Milford I-89 in Concord
North end	US 202 / NH 9 in Concord
Location
Country	United States
State	New Hampshire
Counties	Hillsborough, Merrimack
Highway system
New Hampshire Highway System Interstate US State Turnpikes
← NH 12A → NH 16

New Hampshire Route 13 is a 43.38-mile (69.81 km) long north–south state highway in the state of New Hampshire, United States. The highway runs from Brookline to Concord.

The southern terminus is at the Massachusetts state line in Brookline, where the route continues south as Massachusetts Route 13. The northern terminus is in the center of Concord at U.S. Route 202 and New Hampshire Route 9, locally the intersection of South Street and Pleasant Street.

NH 13 begins as a continuation of Massachusetts Route 13 at the state line between Brookline and Townsend, Massachusetts. It continues north for about 8.4 miles (13.5 km) through Brookline and crosses into Milford, where it meets an interchange with New Hampshire Route 101. The highway continues north for about 1.4 miles (2.3 km) through the outskirts of Milford's urban center until it reaches Union Square, better known as the Milford Oval, where it intersects New Hampshire Route 101A.

NH 13 continues north over the Souhegan River on the Colonel John Shepard Bridge, then turns northwest for 4.4 miles (7.1 km) towards Mont Vernon and serves as the town's main road. After intersecting the Francestown Turnpike in the center of Mont Vernon, NH 13 continues northwest for about 5.9 miles (9.5 km) until it intersects New Hampshire Route 136 in the center of New Boston. The highway then turns east, crossing the South Branch Piscataquog River, then goes northeast for 6.4 miles (10.3 km) along the path of the river toward Goffstown. It turns north at the intersection of New Hampshire Route 114 with which it briefly runs concurrently over the Piscataquog River and into downtown Goffstown.

After separating from NH 114 at the Goffstown Public Library, NH 13 continues north for 6.1 miles (9.8 km) to the town center of Dunbarton, then for another 3.5 miles (5.6 km) north where it intersects New Hampshire Route 77. After taking a sharp right at the intersection, NH 13 heads northeast towards Concord for 4.0 miles (6.4 km) until it reaches the interchange with Interstate 89 near a New Hampshire State Police barracks. NH 13 then turns north on South Street near downtown Concord, where it meets its northern terminus at US 202/NH 9.

County	Location[1][2]	mi[1][2]	km	Destinations	Notes
Hillsborough	Brookline	0.000	0.000	Route 13 south (Brookline Street) – Townsend	Continuation from Massachusetts
		3.385	5.448	NH 130 (Milford Street) – Brookline, Nashua	Western terminus of NH 130
	Milford	8.391– 8.550	13.504– 13.760	NH 101 – Wilton, Peterborough, Keene, Manchester, Nashua	Interchange
		9.760	15.707	NH 101A (Elm Street / Nashua Street) – Keene, Nashua	Union Square (the "Milford Oval")
	New Boston	20.572	33.107	NH 77 / NH 136 (High Street) – Weare, Francestown	Eastern terminus of NH 136 & Western terminus of NH 77
	Goffstown	27.135	43.670	NH 114 south (Mast Road) – Manchester	Southern end of concurrency with NH 114
		27.454	44.183	NH 114 north (North Mast Road) – Weare, Henniker	Northern end of concurrency with NH 114
Merrimack	Dunbarton	37.072	59.662	NH 77 (Concord State Road) – Weare	Northern terminus of NH 77
	Concord	40.889– 41.172	65.804– 66.260	I-89 to I-93 – Manchester, New London, Lebanon	Exit 2 on I-89
		43.368	69.794	US 202 / NH 9 (Pleasant Street)	Northern terminus of NH 13
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

• New Hampshire State Route 13 on Flickr