New Hampshire Route 175

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New Hampshire Route 175 marker

New Hampshire Route 175
Map of Grafton County in northwestern New Hampshire with NH 175 highlighted in red
Route information
Maintained by NHDOT
Length25.261 mi[1] (40.654 km)
Major junctions
South end US 3 / NH 25 in Holderness
North end US 3 in Woodstock
Highway system
NH 171I‑193

New Hampshire Route 175 (NH 175) is a state highway in the U.S. state of New Hampshire. The highway runs north 25.261 miles (40.654 km) from an intersection in Holderness with U.S. Route 3 and New Hampshire Route 25 to an intersection with US 3 in Woodstock.

NH 175 is a minor highway that parallels US 3 and Interstate 93 through the valley of the Pemigewasset River. NH 175 has a secondary spur road, NH 175A, which connects it to downtown Plymouth.

Route description[edit]

NH 175 begins at an intersection with US 3 and NH 25 (Daniel Webster Highway) at Little Squam Lake in the town of Holderness. The state highway heads north and then west through a hilly area where it briefly passes through the town of Ashland before returning to Holderness. NH 175 enters the valley of the Pemigewasset River and passes by the historic Trinity Church and near the Holderness School and the Chapel of the Holy Cross. North of the school and churches, the highway meets the eastern end of its spur into Plymouth and Plymouth State University, NH 175A. NH 175 continues north parallel to the river and I-93 and US 3, which follow the opposite, right bank of the river, into the town of Campton. The highway crosses the Beebe River and parallels the Mad River to its bridge over the river immediately to the south of the highway's junction with NH 49. NH 175 passes through the town of Thornton and its name becomes Eastside Road on entering the town of Woodstock. The highway passes under I-93, has two crossings of the Pemigewasset River, and intersects Tripoli Road, which has a diamond interchange with I-93 immediately to the east. NH 175 has an oblique grade crossing of the Hobo Railroad before crossing the river a third time on a truss bridge and reaching its northern terminus at US 3 (Daniel Webster Highway) just south of the community of North Woodstock.[2]

Major intersections[edit]

The entire route is in Grafton County. [1][3]

Holderness0.0000.000 US 3 / NH 25 (Daniel Webster Highway) – Ashland, MeredithSouthern terminus
4.7137.585 NH 175A to I‑93 – PlymouthExit 25 on I-93
Campton12.76520.543 NH 49 – Waterville Valley
Woodstock22.68936.514Tripoli Road to I‑93Exit 31 on I-93
25.26140.654 US 3 (Daniel Webster Highway) – Littleton, PlymouthNorthern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Suffixed route[edit]

New Hampshire Route 175A
Length0.806 mi[1] (1.297 km)

New Hampshire Route 175A (NH 175A) is a 0.806-mile-long (1.297 km) spur route of NH 175 in the towns of Plymouth and Holderness. The highway begins as the east leg of a roundabout in downtown Plymouth, which is dominated by the campus of Plymouth State University. The north and south legs of the roundabout consist of Main Street, which carries US 3 and NH 25; the west leg is town-maintained High Street. NH 175A has a grade crossing of a railroad and crosses over the Pemigewasset River into Holderness. The highway passes through the athletic complex of the university before reaching its four-ramp partial cloverleaf interchange with I-93. East of I-93, NH 175A has its eastern terminus at NH 175.[4]


Southern starting point of NH 175 in Holderness
  1. ^ a b c d Bureau of Planning & Community Assistance (February 20, 2015). "NH Public Roads". Concord, New Hampshire: New Hampshire Department of Transportation. Retrieved April 7, 2015.
  2. ^ Google (2012-10-28). "New Hampshire Route 175" (Map). Google Maps. Google. Retrieved 2012-10-28.
  3. ^ a b Bureau of Planning & Community Assistance (April 3, 2015). "Nodal Reference 2015, State of New Hampshire". New Hampshire Department of Transportation. Retrieved April 7, 2015.
  4. ^ Google (2012-10-28). "New Hampshire Route 175A" (Map). Google Maps. Google. Retrieved 2012-10-28.

External links[edit]

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