New York State Route 28A

New York State Route 28A
NY 28A highlighted in red
Route information
Auxiliary route of NY 28
Maintained by NYCDOT and Ulster County
Length	19.82 mi[1] (31.90 km)
Existed	c. 1933[2][3]–present
Major junctions
West end	NY 28 in Olive
East end	NY 28 in Kingston
Location
Country	United States
State	New York
Counties	Ulster
Highway system
New York Highways Interstate US State Reference Parkways
← NY 28 → NY 28B

New York State Route 28A (NY 28A) is an east–west state highway in Ulster County, New York, in the United States. It extends for nearly 20 miles (32 km) along the south side of Ashokan Reservoir in Catskill Park, serving as a southerly alternate route of NY 28 through the area. Many of the communities along its length, such as West Shokan and Olivebridge, are relocated versions of those condemned for the reservoir's construction. Near Olivebridge, NY 28A intersects NY 213, the only other state route that NY 28A intersects aside from its parent, NY 28.

NY 28A was built in the early 20th century during the Ashokan Reservoir's construction. The highway was built and subsequently maintained by New York City as the result of a 1909 court order, which mandated that the city maintain the reservoir perimeter roads in perpetuity. In the 1930 renumbering of state highways in New York, the portion of the southern loop road between Boiceville and Olivebridge became part of NY 213. The entire southern loop road was redesignated as NY 28A c. 1933. In the 1970s, New York City sought to transfer control of its upstate roads to the New York State Department of Transportation (NYSDOT); however, as of 2013, no action had been taken.