New York State Route 631 (NY 631) is a north–south state highway in Onondaga County, New York, in the United States. It serves as a bypass around the village of Baldwinsville, extending for just over 5 miles (8.0 km) from an intersection with NY 370 in the southeastern part of the village to a junction with NY 48 and NY 690 just north of Baldwinsville in the town of Lysander. The route has a short overlap with NY 31 east of the village. Most of the route is two lanes wide and passes through rural areas around the edge of Baldwinsville, while a part near the Lysander community of Radisson is four lanes wide and serves residential and commercial neighborhoods.

New York State Route 370 (NY 370) is an east–west state highway in Central New York in the United States. It extends for about 35 miles (56.33 km) from an intersection with NY 104 and NY 104A south of the Wayne County village of Red Creek to a junction with U.S. Route 11 (US 11) in the Onondaga County city of Syracuse. The western and central portions of the route pass through mostly rural areas; however, the eastern section serves densely populated areas of Onondaga County, including the villages of Baldwinsville and Liverpool. NY 370 also passes through Cayuga County, where it connects to NY 34, a major north–south highway in Central New York.