It forms a connection from NY 7 to Interstate 890 along the western edge of the city of Schenectady and passes by the Rotterdam Square shopping mall.

While Burdeck ends here, NY 337 continues on, following Campbell northwest under the Delaware and Hudson Railway mainline as the route descends into a small valley surrounding Poentic Kill.

At the base of the dip, NY 337 widens to four lanes as it approaches Rotterdam Square, a large shopping mall situated to the east of Campbell Road.

NY 337 passes east of the Great Flats Nature Trail in its final quarter-mile (0.4 km) before terminating at Interstate 890 exit 2 across the river from Scotia.

[4] The bridge carrying NY 337 over Poentic Kill near the western entrance to Rotterdam Square, 25.9 metres (85 ft) in length, was replaced in 1999.