New Hampshire Route 125 (abbreviated NH 125) is a 51.97 miles (83.6 km) long north–south state highway

State highway

State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

 in 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...

 and 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...

 counties in southeastern 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...

. It runs from Plaistow

Plaistow, New Hampshire

- External links :* * * * * * * *...

 to just north of 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...

. Although most of the road consists of only two lanes, NH 125 is a major north–south highway with heavy truck and tourist traffic, especially in the summer months, when the road is used as an alternate route between Interstate 495

Interstate 495 (Massachusetts)

Interstate 495 is the designation of an Interstate Highway half-beltway in Massachusetts. It was the longest auxiliary Interstate Highway of its kind—measuring 120.74 miles —until 1996, when the PA Route 9 section of the Pennsylvania Turnpike was redesignated as Interstate 476, making it about ...

 in Haverhill, Massachusetts

Haverhill, Massachusetts

Haverhill is a city in Essex County, Massachusetts, United States. The population was 60,879 at the 2010 census.Located on the Merrimack River, it began as a farming community that would evolve into an important industrial center, beginning with sawmills and gristmills run by water power. In the...

 and the Spaulding Turnpike

Spaulding Turnpike

The Spaulding Turnpike is a toll road in New Hampshire, USA, running from Interstate 95 in Portsmouth northwest to Milton. The turnpike roughly parallels the Maine border, and in the mid-1990s New Hampshire Route 16 was re-signed onto the turnpike...

 in 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 northern terminus of NH 125 is in the village of Union

Union, New Hampshire

Union is a village and census-designated place in the town of Wakefield in Carroll County, New Hampshire. It had a population of 204 at the 2010 census....

 (town of Wakefield

Wakefield, New Hampshire

Wakefield is a town in Carroll County, New Hampshire, United States. The population was 5,078 at the 2010 census. The town includes the villages of Wakefield Corner , East Wakefield, North Wakefield, Sanbornville, Union, Woodman and Province Lake...

) at 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...

, just beyond 125's junction with NH 153

New Hampshire Route 153

New Hampshire Route 153 is a long secondary north–south highway in Strafford and Carroll counties in the eastern portion of the U.S. state of New Hampshire. The road runs from Farmington north to Conway....

. The southern terminus is in Plaistow at the 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...

 state line, where the road continues southward as MA Route 125

Massachusetts Route 125

Route 125 is a Massachusetts state route that while running southwest to northeast, is signed north–south. It runs from Interstate 93 in Wilmington to the Massachusetts-New Hampshire state line in Haverhill, where it continues as New Hampshire Route 125 through Plaistow to Rochester, New...

.

In the 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....

-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...

 area, the road parallels the Spaulding Turnpike

Spaulding Turnpike

The Spaulding Turnpike is a toll road in New Hampshire, USA, running from Interstate 95 in Portsmouth northwest to Milton. The turnpike roughly parallels the Maine border, and in the mid-1990s New Hampshire Route 16 was re-signed onto the turnpike...

 and is known as Milton Road in Rochester and White Mountain Highway in Milton. The Epping

Epping, New Hampshire

Epping is a town in Rockingham County, New Hampshire, United States. The population was 6,411 at the 2010 census. Epping includes the area known as Camp Hedding....

-Lee

Lee, New Hampshire

Lee is a town in Strafford County, New Hampshire, United States. The population was 4,330 at the 2010 census. The town is a rural farm and bedroom community, being close to the University of New Hampshire.-History:...

-Barrington

Barrington, New Hampshire

Barrington is a town in Strafford County, New Hampshire, United States. The population was 8,576 at the 2010 census. The town is a woodland, farm and bedroom community.-History:...

 section is known as the Calef Highway, named after the locally famous Calef's Store in Barrington.

The road between Epping and East Barrington

Barrington, New Hampshire

Barrington is a town in Strafford County, New Hampshire, United States. The population was 8,576 at the 2010 census. The town is a woodland, farm and bedroom community.-History:...

 (the intersection of Route 125 and Route 9) was built on the grade of the Boston and Maine Railroad

Boston and Maine Railroad

The Boston and Maine Corporation , known as the Boston and Maine Railroad until 1964, was the dominant railroad of the northern New England region of the United States for a century...

's Worcester, Nashua and Portland Division, opened by the Nashua and Rochester Railroad in 1876.