The Chicago and North Western Railway built the Chicago and North Western Terminal in 1911 to replace its Wells Street Station across the North Branch of the Chicago River. The new station, in the Renaissance Revival style, was designed by Frost and Granger, also the architects for the 1903 La Salle Street Station. The station's 16 tracks were elevated above street level and reached by six approach tracks and sheltered under an 894-foot-long [272 meter] Bush train shed. The upper level of the head house housed a concourse and other facilities for intercity passengers, including dressing rooms, baths, nurses and matrons rooms, and a doctor's office. The centerpiece of the upper level was a stately waiting room, measuring 201 by 202 feet (34 by 62 meters), and rising 84 feet (approx. 26 meters) to its barrel-vaulted ceiling. In addition to the main concourse on the upper level, there was a street-level concourse for commuters.