In 1835 Revolutionary War officer and Sheriff of Lancaster County, Adam Diller founded Dillerville, a one time separate settlement in Lancaster’s northwest corner. In June of the same year Diller would grant the Harrisburg & Lancaster Railroad a 1.5-acre plot to construct a depot. From these meager beginnings Dillerville would develop to become the western gateway of the Lancaster terminal, evolving with continual improvements after the PRR assumed control of the Philadelphia & Columbia and Harrisburg & Lancaster Railroads.
Originally the location where the PRR predecessors split away heading west on their respective routes, DV interlocking as it became known, developed into a far more complex facility with the addition of the Lancaster Cut-Off in 1883. The second know tower in this location was completed in 1884 for the new cut-off utilizing Armstrong levers to control lower quadrant semaphore signals and switch points throughout the junction. This tower was built in the typical style of that era with Victorian details including a slate shingled hip roof and center cupola similar to surviving examples like LEMO tower now located in Strasburg, PA and SHORE at Frankford Junction in Philadelphia. DV was an important facility, directing trains to the Columbia Branch, Old Main, H&L line to Harrisburg and the Lancaster Cut-Off / Main Line east. On either side of the interlocking there were several yards servicing industries on the Old Main and the later plants of Armstrong World Industries and its predecessors. Adding to the complexity of this interlocking was an at grade crossing of the R&C division of the Reading Company who’s Lancaster Branch terminated at the foot of Prince Street in the north west corner of the city.
In the late 1920s DV interlocking was part of a consolidation project in preparation for the opening of a new passenger station complex on the Cut-Off centralizing several towers into Lancaster Tower, which was later renamed Cork for its proximity to the PRR’s largest freight customer in the city, Crown Cork & Seal (Armstrong). Another component to this improvements program involved partial abandonment of the Old Line retaining only the segment from West Yard to the freight houses on Water Street. Dillerville Yard continued to serve as a local base of freight operations for the diverse manufacturing and agricultural consignees in the city and beyond on both the Main Line and New Holland Branch.
In 2009 Norfolk Southern, successor of PRR operations in the area (through the purchase of Conrail) began a major reconfiguration of Dillerville Yard in order to accommodate the $75 million Lancaster Northwest Gateway Project, which is developing acres of unused brown fields to provide expansion opportunities for both Lancaster General Hospital and Franklin & Marshal College. Earlier this year the last of the remaining PRR era facilities including the pedestrian bridge, trans-load facility and engine terminal were abandoned after NS dedicated new facilities in a yard named after the late H. Craig Lewis state senator and former NS VP of corporate affairs. Part of more than a century of urban renewal the Northwest Gateway Project is the last effort in removing all rail activity from the city center including the industries the railroads once served completing an effort that began in the 1880's with the construction of the Lancaster Cut-Off.