New Jersey Route 31
Route 31 is a state highway in New Jersey, United States. It runs from U.S. Route 206/U.S. Route 1 Business in Trenton, Mercer County, north to an intersection with US 46 in the Buttzville section of White Township, Warren County. Along the way, Route 31 heads through the communities of Flemington, Clinton, and Washington. Most of the highway is state-maintained; however, the section within the city limits of Trenton is maintained by the city. Much of Route 31 is a two-lane highway that passes through farmland, woodland, and mountainous areas. Two portions of the route—from Trenton to Pennington and from Ringoes to Clinton—consist of more development.
The highway was constructed from 1926 to 1935. Route 31 has carried two different numbers in the past. It was known as Route 30 between 1927 and 1953, when it was renumbered to Route 69 to avoid conflicting with US 30 in southern New Jersey. It was renumbered to Route 31 in 1967 due to sign theft that resulted from the sexual meaning of the number 69. There were plans made in the late 1960s and early 1970s to build a freeway in the Route 31 corridor that would begin in the Trenton area and extend as far north as Interstate 84 in Port Jervis, New York; however, it was canceled in the mid-1970s due to opposition from area residents and environmental and financial constraints. In recent years, the portion of Route 31 between Flemington and Clinton has been widened to four lanes. In addition, there was a failed project to build a bypass of Flemington that would have also eliminated the Flemington Circle.
Route description
Route 31 heads north from US 1 Bus./US 206 at the Trenton Battle Monument in Trenton, Mercer County, on city-maintained two-lane undivided Pennington Road. The route passes by residences and some businesses in the northern part of Trenton, crossing the intersection with Calhoun Street. Route 31 enters Ewing and becomes state-mantainted at the point where it crosses the intersection with Parkway Avenue. The route continues north through suburban residential areas and passes to the west of The College of New Jersey campus. It crosses into Hopewell Township and briefly becomes a four-lane divided highway as it intersects I-295. Past this interchange, Route 31 continues north as an undivided road through a mix of residences with some businesses, meeting the intersection with Washington Crossing–Pennington Road/Blackwell Road and Pennington Road at a traffic circle. It continues past the circle as a two-lane, undivided road and bypasses Pennington to the west. The route briefly skirts into Pennington twice, where it is a divided highway as it crosses over CSX's Trenton Subdivision railroad line. Route 31 enters Pennington again before heading back into Hopewell Township. Here, the road meets the intersection with North Main Street and heads north into farmland and woodland with some homes. It eventually turns to the northwest and crosses the intersection with Lambertville–Hopewell Road.Upon crossing the intersection with Lambertville–Hopewell Road, Route 31 enters East Amwell, Hunterdon County, and continues through rural areas. The route eventually forms the border between East Amwell and West Amwell and intersects with Harbourton Road. The two routes run concurrently to the northwest, becoming a three-lane road with a center left-turn lane that crosses entirely into East Amwell before resuming along the border of East and West Amwell townships. The road becomes a divided highway and crosses entirely into East Amwell again before it comes to an interchange with US 202, where CR 579 continues north into Ringoes and Route 31 heads north along US 202, a four-lane, divided highway with intersections featuring jughandle ramps.
US 202/Route 31 heads to the north, coming to an intersection with Old York Road, which heads to the southwest as Route 179 and to the northeast as CR 514. Past this intersection, the road forms the border between East Amwell to the west and Raritan Township to the east before crossing entirely into Raritan Township. The road continues north through farms, reaching commercial development as it approaches the Flemington area. The road widens to six lanes and crosses into Flemington. The road comes to the Flemington Circle where US 202 continues to the northeast, Route 12 heads to the west, and Route 31 continues to the north on a five-lane, undivided road.
The route crosses back into Raritan Township, where it passes under the Black River and Western Railroad and briefly becomes a four-lane divided highway before reentering Flemington. Not long afterward, it heads into Raritan Township again, where it crosses the intersection with Walter E. Foran Boulevard and passes by the former site of Flemington Speedway, now a commercial development called Raritan Town Square. Route 31 passes through suburban development before turning into a four-lane, divided highway with some intersections controlled by jughandles and crossing over Norfolk Southern Railway's Lehigh Line and the South Branch of the Raritan River into Readington. It continues north through a mix of farms and wooded areas with some residential areas, crossing into Clinton Township.
Route 31 comes to an interchange with I-78/US 22, with a park and ride lot located to the northwest of the interchange. Past here, the route turns to the northwest into a more developed setting and has an interchange with Route 173. The road runs through Clinton, where it crosses the South Branch Raritan River again. Back in Clinton Township, Route 31 intersects with Halsted Street, forming a concurrency with that route and running along the eastern shore of Spruce Run Reservoir. CR 513 splits from Route 31 by heading north on West Main Street, and Route 31 continues north, narrowing to a two-lane undivided road. The route crosses into Lebanon Township, where it heads northwest across the wooded Musconetcong Mountains. Route 31 passes through Glen Gardner, which it enters upon crossing Sprunce Run, before heading into Hampton, where it heads west through that community as a three-lane road with two southbound lanes and one northbound lane and passes over an abandoned railroad line.
Route 31 crosses the Musconetcong River into Washington Township, Warren County, where it heads north into the agricultural Musconetcong Valley. It heads into Washington Borough, where the road becomes four lanes, passing under the Washington Secondary railroad line that is owned by Norfolk Southern and operated by the Dover and Delaware River Railroad and crossing the intersection with Washington Avenue. Past the intersection with Washington Avenue, Route 31 narrows to three lanes, passing under the Dover and Delaware River Railroad line, and becomes a two-lane road again as it crosses back into Washington Township at the intersection with Essex Road. It heads into farmland before turning northwest and heading across the Oxford Mountain, entering Mansfield Township. While crossing the Oxford Mountain, Route 31 skirts along the border between Mansfield Township and Washington Township. The route enters Oxford Township, where it heads through the community of Oxford as a four-lane road. Route 31 continues north through a mix of woods and agricultural areas past Oxford, crossing into White Township at the intersection with East Quarry Road and coming to its northern terminus at the intersection with US 46.
History
Old roads and construction
Before the state received ownership of Route 31, the portion of the highway from Clinton to Oxford was part of the Spruce Run Turnpike. The turnpike was chartered by the New Jersey State Assembly on February 6, 1813, and was maintained and tolled by the Spruce Run Turnpike Company. The turnpike served as a connector along the old Hopewell Road from modern-day Lambertville to New Brunswick. The road also served as a highly used connector route for the Jersey and Castenoga wagon lines, which served both of the aforementioned communities. The route from Trenton to Pennington was part of the Pennington Turnpike, another privately maintained pre-designation highway. The turnpike was chartered on March 17, 1854, by the General Assembly along an alignment of the old Pennington Road. The turnpike road was to be constructed no further than in breadth, and to be made out of stone, plank or gravel. The turnpike cost one cent for every carriage or sled pulled by horses or mules, five mills for horse and rider and every dozen of pigs and sheep. It cost two cents to move a dozen cattle, mules or horses. Fines were levied as high as $10 to anyone who vandalized any structure along the turnpike. If the company did not construct their highway in six years, the state would then take over and make it a public highway. On November 1, 1898, the turnpike, made mostly of stone, was taken over by the state at a cost of $31,661.87. Repairs were slated to be completed on the road by October 31, 1899. Also on March 17, 1854, the state legislature made the charter official for the Hopewell and Ewing Turnpike, which used the portion of Route 31 from Pennington to the current-day intersection with CR 654. The turnpike was taken over by the state in 1897 and the privately maintained company was dissolved.The formation of current-day Route 31 began around 1916, when a portion of the highway, along the community of Hampton was taken over by the state and was repaired to state standards for $300. In 1923, the state of New Jersey passed the Good Roads Act, which greatly expanded the state highway system in New Jersey. This act took over pre-existing highways and rebuilt them to a standard mandated by the state. Construction began on Route 31 in 1926, when the State Highway Department began work at the southern terminus in Trenton. A total of 11 bridges were constructed along the highway during this time, signifying the route's construction northward. The oldest ones, dating back to 1926, were located in Ewing and Oxford Township. The one in Ewing was along the first portion of the highway to be constructed.
By 1929, the construction had reached Lawrence Township, where another long stretch of highway was built. During 1930, the construction had reached Clinton, Glen Gardener, and Washington. Construction of the highway progressed northbound, with sections of the Mercer-Hunterdon-Warren route reaching Hunterdon County in 1931. The Hunterdon County portion up to the Musconetcong River was constructed for six months, with completion in October 1931. Construction of the highway northward from the Musconetcong River started in October of the same year. The mainline construction reached the northern terminus in Buttzville in 1932. The route, although the construction had reached its northern end, was not complete due to bypasses around Clinton and Pennington were proposed to be built. These bypasses were never constructed, and during 1934, more portions of the highway in Hunterdon County were finished. The route was completed in 1935, providing an uninterrupted route from the capital city of Trenton to northern Warren County.