implemented a zoning plan called Hinterm Bahnhof ("behind the station"), leading to the development of the current Stühlinger quarter. Commercial operations and factories were soon established there, some of which were displaced from the now residential areas of Herder and Wiehre. During the 1870s, the Baden Railway expanded the station with waiting rooms, utility rooms and a courtyard. As a result of the annexation of Alsace after the Franco-Prussian War in 1871, Alsace-Lorraine was quickly connected to the rail network by the Freiburg–Colmar railway, which made a third platform track and second platform necessary. The Elz Valley Railway branching from the Rhine Valley Railway in Denzlingen opened to Waldkirch in 1875 and was extended to Elzach in 1901. In 1885, rail transport in Freiburg had increased so much that the old station hall was demolished and two new halls were built. The level crossing was replaced by a bridge, then called the Kaiser Wilhelm bridge and now called Wiwilí bridge, after Freiburg's sister city in Nicaragua. Two underpasses were created during the renovation of 1885/86; these still exist today and lead to stairs connecting to each platform. The station was named Hauptbahnhof ("main station") following the opening of the Hell Valley Railway (Höllentalbahn) and Freiburg Wiehre station in 1887. Freight warehouses and loading areas in the station hardly increased in the late 19th century despite an increase of about 20 percent of traffic since 1878. Therefore, between 1901 and 1905, a separate freight yard and an freight bypass line was built between Gundelfingen and Leutersberg for the relief of the main line. Growth during the Weimar Republic The station facilities for handling passengers were often criticised from the beginning of the 20th century. Complaints were made about the lack of platform tracks, which meant that arriving and waiting trains often had to share one of the three tracks. This could be a source of danger, as was shown, for example, in 1924, when a departing suburban train ran into another train that had run early and was waiting in the station. Also, the station was the target of criticism and the Freiburger Zeitung newspaper called it a "mousetrap". The passenger volume also increased massively in parallel with the population growth of Freiburg. Ticket sales in 1919 had almost doubled from the 1,340,954 tickets sold in 1900. Therefore, in 1910 there were plans for a complete rebuild of the station. The