New Hampshire Route 4

New Hampshire Route 4
Route information
Maintained by NHDOT
Length:	3.78 mi (6.08 km)
Major junctions
South end:	NH Routes 9/108 in Dover
	NH Routes 9/108 in Dover
East end:	State Route 4 in South Berwick, ME
Location
Counties:	Strafford
Highway system
New Hampshire Routes ← US 4 NH 4A →

New Hampshire Route 4 is a 3.78-mile (6.08 km) long state highway located in eastern Strafford County, New Hampshire. The southwestern terminus of the route is at New Hampshire Route 9 and New Hampshire Route 108 in downtown Dover. The northeastern terminus is at the Maine state line in Rollinsford.

The southern section of Route 4, which is overlapped with Routes 9 and 108, is signed as north–south. East of Dover, where Route 4 runs by itself, it is signed east–west.

NH Route 4 is not the same road as, nor is it related to, nearby U.S. Route 4, which also enters the Dover city limits. This is the only instance of two non-linked highways sharing a number in the state.

Route description

Route 4 begins in downtown Dover at the intersection between Silver Street (Route 9) and Central Avenue (Route 108). The three routes run concurrently for about a half mile, until Route 4 splits off in the center of town. From here, Route 4 is signed east–west. The route runs northeast out of Dover for just under 4 miles (6.4 km), and passes along the southern edge of the town of Rollinsford. Route 4 immediately crosses the Salmon Falls River into the town of South Berwick, ME and becomes Maine State Route 4. Route 4 does not intersect any numbered highways between the split with Routes 9/108 and the Maine border.

Major intersections

The entire route is in Strafford County.

Location	Mile	Destinations	Notes
Dover	0.00	NH Route 9 NH Route 108	Southern terminus of concurrency. Southern terminus of NH Route 4.
		NH Route 9 NH Route 108	Northern terminus of concurrency.
Rollinsford	3.78	ME State Route 4	Northern terminus of NH Route 4. Southern terminus of State Route 4. To Maine State Route 236.