The Spaulding Turnpike is a toll road

Toll road

A toll road is a privately or publicly built road for which a driver pays a toll for use. Structures for which tolls are charged include toll bridges and toll tunnels. Non-toll roads are financed using other sources of revenue, most typically fuel tax or general tax funds...

 in New Hampshire

New Hampshire

New Hampshire is a state in the New England region of the northeastern United States of America. The state was named after the southern English county of Hampshire. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian...

, USA

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, running 33 miles (53.1 km) from Interstate 95

Interstate 95 in New Hampshire

Interstate 95, the main Interstate Highway on the east coast of the United States, cuts through the Seacoast Region of New Hampshire. The majority of it, from the Massachusetts border to the Portsmouth Circle in Portsmouth, is the 14.29-mile Blue Star Turnpike or New Hampshire Turnpike, a toll...

 in Portsmouth

Portsmouth, New Hampshire

Portsmouth is a city in Rockingham County, New Hampshire in the United States. It is the largest city but only the fourth-largest community in the county, with a population of 21,233 at the 2010 census...

 northwest to Milton

Milton, New Hampshire

Milton is a town in Strafford County, New Hampshire, United States. The population was 4,598 at the 2010 census. A manufacturing, resort and residential town, Milton includes the village of Milton Mills...

. The turnpike roughly parallels the Maine

Maine

Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost...

 border, and in the mid-1990s New Hampshire Route 16

New Hampshire Route 16

New Hampshire Route 16 is a long north–south highway in the U.S. state of New Hampshire. Much of its length is close to the border with Maine. NH 16 is the main route from the Seacoast region north to the Lakes Region and the White Mountains. The section from Portsmouth to Milton is a...

 was re-signed onto the turnpike. There are two toll plazas on the turnpike, in Dover

Dover, New Hampshire

Dover is a city in Strafford County, New Hampshire, in the United States of America. The population was 29,987 at the 2010 census, the largest in the New Hampshire Seacoast region...

 and Rochester

Rochester, New Hampshire

Rochester is a city in Strafford County, New Hampshire, United States. As of the 2010 census, the city population was 29,752. The city includes the villages of East Rochester and Gonic. Rochester is home to Skyhaven Airport and the annual Rochester Fair....

.

The turnpike is part of the New Hampshire Turnpike System

New Hampshire Turnpike System

New Hampshire Turnpike System is a system of of limited access highway, of which are part of the National Highway System, within the U.S. state of New Hampshire...

 operated by the New Hampshire Department of Transportation

New Hampshire Department of Transportation

The State of New Hampshire Department of Transportation is a government agency of the U.S. state of New Hampshire. The NHDOT is under the executive direction of Commissioner of Transportation George Campbell. The main office of the NHDOT is located in the J.O...

 Bureau of Turnpikes. It is a 4-lane divided highway from Portsmouth to Rochester. From exit 12 at NH Route 125 south of Rochester north to the highway's terminus in Milton it is a two-lane freeway

Two-lane freeway

A two-lane expressway is an expressway with only one lane in each direction, and usually no median barrier. It may be built that way because of constraints, or may be intended for expansion once traffic volumes rise. The term super two is often used by roadgeeks for this type of road, but traffic...

, although it is currently being widened to four lanes through Rochester, between exits 11 and 16. Route 16 continues as an all-access highway north of Milton.

Exit 1, on the border between Portsmouth and Newington

Newington, New Hampshire

Newington is a town in Rockingham County, New Hampshire, United States. The population was 753 at the 2010 census. It is bounded to the west by Great Bay, northwest by Little Bay and northeast by the Piscataqua River. It is home to Portsmouth International Airport at Pease , and to the New...

, was previously an at-grade crossing with traffic light

Traffic light

Traffic lights, which may also be known as stoplights, traffic lamps, traffic signals, signal lights, robots or semaphore, are signalling devices positioned at road intersections, pedestrian crossings and other locations to control competing flows of traffic...

s, most likely due to the proximity of the entrance to Pease Air Force Base. After the base's closure, it was converted into a diamond interchange

Diamond interchange

A diamond interchange is a common type of road junction, used where a freeway crosses a minor road. The freeway itself is grade-separated from the minor road, one crossing the other over a bridge...

. http://msrmaps.com/image.aspx?T=1&S=11&Z=19&X=883&Y=11931&W=2

Southern terminus

Signage on I-95 suggests that the Spaulding Turnpike, Route 16, and U.S. Route 4 all begin at the same point. However:

• Milepost readings indicate that the Spaulding Turnpike begins on the Exit 4 northbound offramp from I-95, approximately 1/4 mile north of the junction, and runs by itself for approximately 0.8 miles before joining Route 16. Southbound ground signage also indicates that the Spaulding Turnpike continues at the right-hand split for I-95 South, ending approximately 1/4 mile shy of the merge with I-95 southbound.
• Signage at the Portsmouth Circle for the freeway now reads (Route 16 North TO Spaulding Turnpike and US-4). This implies that Route 16 begins at the circle and approaches the turnpike from the right. Southbound ground signage indicates Route 16 continues at the left-hand split for I-95 North and US-1 Bypass, ending at the traffic circle. No end signage or milepost is present.
• The first westbound signage for U.S. Route 4 is where the Spaulding Turnpike and Route 16 join up; presumably this is where US-4 West begins. The last eastbound signage is before the split for I-95. No end signage is present; presumably US-4 East ends at the point where the split occurs.

Concurrent routes

• U.S. Route 4 runs along the Turnpike from the I-95 split northward for a distance of approximately 6 miles. US-4 departs the Turnpike at Exit 6W northbound (and joins at Exit 6 southbound), near the Dover barrier toll.
• U.S. Route 202 runs along the Turnpike for approximately 2.5 miles, between Exits 13 and 16.
• Route 11 runs along the Turnpike (also concurrent with US-202) for approximately 3/4 mile, between Exits 15 and 16.

Exit list

County	Town	Mile	# Exit number An exit number is a number assigned to a road junction, usually an exit from a freeway. It is usually marked on the same sign as the destinations of the exit, as well as a sign in the gore....		Destinations	Notes
			Old
Rockingham Rockingham County, New Hampshire -Demographics:As of the census of 2000, there were 277,359 people, 104,529 households, and 74,320 families residing in the county. The population density was 399 people per square mile . There were 113,023 housing units at an average density of 163 per square mile...	Portsmouth Portsmouth, New Hampshire Portsmouth is a city in Rockingham County, New Hampshire in the United States. It is the largest city but only the fourth-largest community in the county, with a population of 21,233 at the 2010 census...	0.00			, Maine Maine Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost... , Massachusetts Massachusetts The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...	Portsmouth Traffic Circle Portsmouth Traffic Circle The Portsmouth Traffic Circle is a four-point rotary in the city of Portsmouth, New Hampshire.-Description:The southern exit of the circle provides access to Interstate 95 north and south, although only northbound I-95 traffic enters here. The eastern and northern exits are part of the U.S. Route 1...
		0.77			, Boston	No northbound exit
		0.92			Brady Drive	Northbound exit and entrance
		1.59		1	Gosling Road – Pease International Tradeport
	Newington Newington, New Hampshire Newington is a town in Rockingham County, New Hampshire, United States. The population was 753 at the 2010 census. It is bounded to the west by Great Bay, northwest by Little Bay and northeast by the Piscataqua River. It is home to Portsmouth International Airport at Pease , and to the New...
		2.38		2	Fox Run Road	Northbound exit and entrance
		2.86		3	Woodbury Avenue	Southbound exit and northbound entrance
		3.45		4	Newington Village
Strafford Strafford County, New Hampshire -Demographics:As of the census of 2000, there were 112,233 people, 42,581 households, and 27,762 families residing in the county. The population density was 304 people per square mile . There were 45,539 housing units at an average density of 124 per square mile...	Dover Dover, New Hampshire Dover is a city in Strafford County, New Hampshire, in the United States of America. The population was 29,987 at the 2010 census, the largest in the New Hampshire Seacoast region...	4.39		5	Hilton Park	No southbound exit
		4.76		6N	Dover Dover, New Hampshire Dover is a city in Strafford County, New Hampshire, in the United States of America. The population was 29,987 at the 2010 census, the largest in the New Hampshire Seacoast region...	No southbound exit
		5.01	3	6W		North end of US 4 overlap; original exit 2
		Dover Toll Plaza $.75
		9.14	4	7
		9.45	5	8		Signed as exits 8E (east) and 8W (west)
		12.24	6	9		Original exit 5
	Rochester Rochester, New Hampshire Rochester is a city in Strafford County, New Hampshire, United States. As of the 2010 census, the city population was 29,752. The city includes the villages of East Rochester and Gonic. Rochester is home to Skyhaven Airport and the annual Rochester Fair....	Rochester Toll Plaza $.75
		18.20		11	Old Dover Road – Rochester Rochester, New Hampshire Rochester is a city in Strafford County, New Hampshire, United States. As of the 2010 census, the city population was 29,752. The city includes the villages of East Rochester and Gonic. Rochester is home to Skyhaven Airport and the annual Rochester Fair....	Northbound exit only
		18.45	7	12
		19.66	8	13		South end of US 202 overlap
		20.76	9	14	Ten Rod Road – Rochester Rochester, New Hampshire Rochester is a city in Strafford County, New Hampshire, United States. As of the 2010 census, the city population was 29,752. The city includes the villages of East Rochester and Gonic. Rochester is home to Skyhaven Airport and the annual Rochester Fair....
		21.26	10	15		South end of NH 11 overlap
		22.02		16	, Sanford	North end of US 202/NH 11 overlap
	Milton Milton, New Hampshire Milton is a town in Strafford County, New Hampshire, United States. The population was 4,598 at the 2010 census. A manufacturing, resort and residential town, Milton includes the village of Milton Mills...	27.40		17
		33.11		18
						Continuation beyond exit 18