New York State Route 18B

New York State Route 277
Map of Erie County in western New York with NY 277 highlighted in red
Route information
Maintained by NYSDOT
Length:	21.40 mi (34.44 km)
Existed:	c. 1931 – present
Major junctions
South end:	NY 391 in Boston
	US 20A in Orchard Park village US 20 in Orchard Park town NY 400 in West Seneca NY 354 in West Seneca NY 33 in Cheektowaga
North end:	NY 324 in Amherst
Location
Counties:	Erie
Highway system
New York Highways Interstate U.S. State Reference Parkways ← NY 276 I-278 → ← NY 18A NY 18D →

New York State Route 277 (NY 277) is a state highway in New York in the United States. This highway is also called Union Road, along with other names. NY 277 is a major north–south road east of Buffalo, New York, through the middle of Erie County. The section of NY 277 north of Orchard Park used to be New York State Route 18B until the portion of NY 18 south of Niagara Falls was deleted on January 1, 1962.

NY 277 begins at an intersection with NY 391 (Boston State Road) in the hamlet of North Boston (in the town of Boston). Running northeast along Herman Hill Road, NY 277 is a two-lane local road, passing the North Boston Stadium, crossing a junction with South Abbott Road (County Route 28 or CR 28) before becoming a dense woods road into the town of Orchard Park and changing names to Boston Ridge Road. Returning to a residential road, the route turns eastward south Chestnut Ridge Park, reaching a junction with Chestnut Ridge Road (CR 552), where NY 277 turns northward.

Running along the southeastern edge of Chestnut Ridge Park, NY 277 becomes a two-lane residential street through Orchard Park, crossing north past Gartman Road (CR 529). Continuing north, the route crosses into Chestnut Ridge Park, reaching an interchange with Sheriff Drive in the park. A short distance north of Sheriff Drive, the route leaves the park, reaching the eastern terminus of Newton Road (CR 110). Returning to the residential neighborhoods, NY 277 bypasses the hamlet of Ellicott, which is connected via Powers Road (CR 370). Just south of the border with the village of Orchard Park, NY 277 reaches the hamlet of Duells Corner, where the route junctions with NY 240 (New Armor Duells Road).