Continuing its north/northeast winding, the Sprain Brook enters an interchange with NY 100B (Dobbs Ferry Road), passing by East Rumbrook Park. Crossing over NY 119 in Elmsford, the parkway enters an interchange with Interstate 287 (the Cross Westchester Expressway). After crossing through the interchange, the Spain continues northward as a six-lane parkway back through the town of Greenburgh, entering an interchange with NY 100C (Grasslands Road). Paralleling NY 100 to the west, the parkway, bending northward into Mount Pleasant and an interchange with County Route 301 (Bradhurst Entrance North Road), which connects to NY 100 (Bradhurst Avenue). North of that junction, the southbound lanes of the Sprain Brook interchange with a crossing NY 100. After several bends to the north, the Sprain Brook enters the merging Taconic State Parkway and terminates as the right-of-way continues as the Taconic.