New York State Route 125
Encyclopedia
New York State Route 125 (NY 125) is a 7.5 miles (12.07 km) long north–south state highway in Westchester County, New York
Westchester County, New York
Westchester County is a county located in the U.S. state of New York. Westchester covers an area of and has a population of 949,113 according to the 2010 Census, residing in 45 municipalities...

. The route begins in The Town of Mamaroneck
Mamaroneck (town), New York
Mamaroneck is a town in Westchester County, New York, United States. The population was 29,156 at the 2010 census. There are two villages contained within the town: Larchmont and the Village of Mamaroneck...

 at U.S. Route 1 and ends within the city of White Plains at NY 22
New York State Route 22
New York State Route 22 is a north–south state highway in eastern New York in the United States. It runs parallel to the state's eastern edge from the outskirts of New York City to a short distance south of the Canadian border. At , it is the state's longest north–south route and...

.

The route was once proposed to be realigned to the Bronx – White Plains Expressway.

Route description

NY 125 begins in the Town of Mamaroneck
Mamaroneck (town), New York
Mamaroneck is a town in Westchester County, New York, United States. The population was 29,156 at the 2010 census. There are two villages contained within the town: Larchmont and the Village of Mamaroneck...

 (just outside Larchmont Village
Larchmont, New York
Larchmont is a village in Westchester County, New York. The population was 5,864 at the 2010 census. It is located within the town of Mamaroneck, on the shore of Long Island Sound, northeast of Midtown Manhattan...

) at U.S. Route 1 as Weaver Street. The route heads north and travels along the border between the city of New Rochelle
New Rochelle, New York
New Rochelle is a city in Westchester County, New York, United States, in the southeastern portion of the state.The town was settled by refugee Huguenots in 1688 who were fleeing persecution in France...

 and the village of Scarsdale
Scarsdale, New York
Scarsdale is a coterminous town and village in Westchester County, New York, United States, in the northern suburbs of New York City. The Town of Scarsdale is coextensive with the Village of Scarsdale, but the community has opted to operate solely with a village government, one of several villages...

. NY 125 meets the Hutchinson River Parkway
Hutchinson River Parkway
The Hutchinson River Parkway is a north–south parkway in southern New York, United States. It extends for from the massive Bruckner Interchange in the Throgs Neck section of the Bronx to the New York – Connecticut state line at Rye Brook...

 by way of an interchange in this area. Near the end of Weaver Street the Heathcote Bypass splits off. The portion between the Mamaroneck town line and the junction with the Hutchinson River Parkway is county-maintained (designated but not signed as County Route 129).

In Scarsdale, it then follows Palmer Avenue and Secor Road heading into the city of White Plains
White Plains, New York
White Plains is a city and the county seat of Westchester County, New York, United States. It is located in south-central Westchester, about east of the Hudson River and northwest of Long Island Sound...

. In White Plains, the road becomes Old Mamaroneck Road. Old Mamaroneck Road is an unsigned county route with the designation County Route 26. Old Mamaroneck Road then merges onto Mamaroneck Avenue, with NY 125 ending at NY 22
New York State Route 22
New York State Route 22 is a north–south state highway in eastern New York in the United States. It runs parallel to the state's eastern edge from the outskirts of New York City to a short distance south of the Canadian border. At , it is the state's longest north–south route and...

 (Post Road). This northernmost section is maintained by the city of White Plains.

Heathcote Bypass

The Heathcote Bypass is a bypass running below the grade of a major intersection of five roads ("The Five Corners") at the New Rochelle
New Rochelle, New York
New Rochelle is a city in Westchester County, New York, United States, in the southeastern portion of the state.The town was settled by refugee Huguenots in 1688 who were fleeing persecution in France...

 and Scarsdale
Scarsdale, New York
Scarsdale is a coterminous town and village in Westchester County, New York, United States, in the northern suburbs of New York City. The Town of Scarsdale is coextensive with the Village of Scarsdale, but the community has opted to operate solely with a village government, one of several villages...

 border. It runs from Weaver Street to Secor Road, both of which are signed NY 125. East of Secor Road, while the bypass ends, the roadway continues as Wildwood Road. The road was built on the former right of way
Right-of-way (railroad)
A right-of-way is a strip of land that is granted, through an easement or other mechanism, for transportation purposes, such as for a trail, driveway, rail line or highway. A right-of-way is reserved for the purposes of maintenance or expansion of existing services with the right-of-way...

 of the New York, Westchester and Boston Railway
New York, Westchester and Boston Railway
The New York, Westchester and Boston Railway Company , known to its riders as "the Westchester" and colloquially as the "Boston-Westchester", operated as an electric commuter railroad in the Bronx and Westchester County, New York from 1912 to 1937...

's line to White Plains, which shut down on the last day of 1937. Its entire 1.13 miles (1.82 km) length is unsigned County Route 143. Near the south end, at surface level, is the former Heathcote Station building, which until 2007 housed the Scarsdale Volunteer Ambulance Corps.

History

NY 125 was first designated in the 1930 renumbering of state highways in New York. Its original northern end was at the intersection with Mamaroneck Avenue, which was then NY 126. The NY 126 designation was removed ca. 1936, at which time NY 125 was extended north to NY 22
New York State Route 22
New York State Route 22 is a north–south state highway in eastern New York in the United States. It runs parallel to the state's eastern edge from the outskirts of New York City to a short distance south of the Canadian border. At , it is the state's longest north–south route and...

.

Major intersections

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