opened at 125th Street, replacing a small, dingy station in the old Park Avenue open cut. The new station was built atop the old open cut and directly under the new Park Avenue Viaduct. The platforms, which were built on the viaduct, were built to be long. As part of the construction of Grand Central Terminal in the early 1900s, all of New York Central's lines that ran into the terminal were electrified. Third rail was installed on the Hudson and Harlem Divisions, while the New Haven Division received overhead wires on the segments that were not shared with the Harlem and Hudson Division. In November 1907, the first electric train operated on the Harlem Division, running between Grand Central Terminal and Wakefield. On October 10, 1909, the New York Central began installing third rail between Mount Vernon and White Plains. On March 14, 1910, electric service was extended to North White Plains. Passengers that used the Upper Harlem Division were attracted to this cleaner, faster service. In July 1909, the New York State Public Service Commission ordered that the New York Central Railroad eliminate grade crossings at Hamilton Avenue, Railroad Avenue and Tibbits Avenue in White Plains and construct a new station. The project was estimated to cost $200,000, with the village and state each funding one-quarter of the cost and the railroad paying the remainder of the cost. Tibbits Avenue would be put into a -wide tunnel underneath the rail line done about north of the existing crossing with a clearance of . Railroad Avenue would be put in a -wide tunnel, with a -wide roadway and sidewalks, with a maximum clearance of . An additional crossing of the rail line would be provided approximately to the north of Railroad Avenue. Property values along the line increased. Other improvements were made to the Harlem Division at the same time: grade crossings were being eliminated, tracks were being straightened and new stations were built at White Plains and Mount Vernon. In March 1910, the New York Central did not yet begin work on improvements to the line at White Plains and adjacent stations, as work on improvements at West Mount Vernon were still underway. This included the filling-in of the new roadbed west of the existing station. As part of the project, a viaduct was constructed to eliminate the dangerous grade crossing in Yonkers at Railroad Avenue and Mount