It then continues towards the north to Old Northern Boulevard (CR D71)—although this segment is one-way southbound.

The road then continues north, through Roslyn's downtown, to Bryant Avenue (CR C26), at which point Old Northern Boulevard curves to the northeast and shortly thereafter merges into New York State Route 25A (NY 25A, Northern Boulevard), where the county ownership and route designation both terminate.

[8][9][10] Additionally, all of Old Northern Boulevard was part of NY 25A until 1949, when it was bypassed with the construction and opening of the William Cullen Bryant Viaduct.

[11][12][13] In 1988, Roslyn's then mayor, Joel Pasnick, proposed making East Broadway a two-way street.

[4] Several landmarks, including many listed on the National Register of Historic Places, are located along CR C65 – such as the Roslyn National Bank and Trust Company Building, the Smith–Valentine–Wood House, the Willet Titus House, and the old Rescue Hook & Ladder Company No.