Pennsylvania Avenue Line (Washington, D.C.) to take up such portions of their tracks as may come in way of the improvement of the Capitol Grounds". This improvement gave the Capitol Grounds their present shape, bounded by First Street West and East and B Street North and South, and the Pennsylvania Avenue Line was moved to First Street West and B Street South. The B&O station branch was moved to First Avenue West and C Street North, ending at New Jersey Avenue; this had been the route of the B&O before its tracks (actually those of the Alexandria and Washington Railroad) were ripped up in 1872.
Reading Company the Central Railroad of New Jersey, allowing the Reading to offer seamless, one-seat rides from Reading Terminal in Philadelphia to the CNJ's Jersey City Communipaw Terminal by way of Bound Brook onto the CNJ mainline. The Baltimore and Ohio Railroad was also looking for access to the New York market, and in 1903 the B&O gained control over the Reading and thus ensured its trains track rights over the Reading and CNJ to Jersey City. To the north, the New York Short Line was completed in 1906, and was a cut-off for New York Bound through freights and the B&Os