Blue Line. In 1951-1952, the plans were modified to use the Washington Street subway as a busway rather than as a train tunnel, while Clinton and Jackson tunnels were merged and remained a rail plan. The plan was cancelled in April 1962, although the design and placement of the Peoria Street station house went unchanged. See also LaSalle Street TunnelVan Buren Street Tunnel References Transportation in Chicago Buildings and structures in Chicago Railroad tunnels in Illinois Tunnels completed in 1869 1869 establishments in Illinois Transportation buildings and structures in Cook County, Illinois