NY 54A proceeds northward through Urbana as Main Street Extension, crossing Keuka Inlet into the village of Hammondsport.

Bending to the northwest through the northern end of the village, NY 54A leaves along the side of Keuka Lake.

[3] After leaving Glen Grove, NY 54A bends northward out of the hamlet through Urbana until entering the town of Pulteney.

Turning northeastward once again, the route enters the hamlet of Gibson Landing at an intersection with Gallagher Road.

[3] The roadway along the western shores of Keuka Lake from Hammondsport to Penn Yan was originally designated as part of NY 38 in the mid-1920s.

[7][8] After deteriorating for many years, the 5-mile (8 km) portion of NY 54A between Penn Yan and Branchport underwent a $5.2 million rehabilitation during the summer of 2010.

In October, local and state officials gathered at the scenic overlook near Esperanza Drive for a ribbon cutting to celebrate the completion of the project.