The railroad bridge over the Neckar River is required in the course of the new construction of Stuttgart’s main station to connect the city and long-distance railroad to the northbound and eastbound lines. It is designed as a composite steel structure with a longitudinal framework consisting of three steel longitudinal beams, each arranged on the outer sides and in the middle of the superstructure – in combination with the steel cables supporting the longitudinal beams. The reinforced concrete deck acts in composite with the regularly arranged cross girders.
The new building will be constructed behind the preserved historic facade on the site, which is only 17 meters wide but 65 meters deep.
The concept is based on the requirement that the extension of 58 rue Belliard be used by two separate parties. The ground floor and basement are predominantly used by the state representative office. The new front building will be used primarily by the Goethe Institute or, in smaller areas, by third-party tenants of Baden-Württemberg companies.
Inside, the integration of a new garden courtyard has ensured that all public spaces on the ground floor have natural lighting and an outdoor connection. The reorganization of the floor plan allows for a variety of internal connections. All parts of the building are interconnected and can be used together for large events. The green roofs and the regenerative energy supply with drilled piles for geothermal use stand for the sustainability of the new building.
A new expansion was built on the site of the previous restaurant in the northwest, which was connected directly to the Deutschhaus via an intermediate structure. On the roof of this building section is the Landtag terrace, which will continue to be accessible from the lobby. The end of the extension is slightly elevated in comparison to the intermediate building and is designed as a clear, cubic building. With its reduced formal language and moderate height, it is less conspicuous than the Deutschhaus and functions as the urban conclusion of the ensemble.
The visitor center of the recently founded Black Forest National Park is located at the pass summit “Ruhestein” (915m asl) in the heart of a unique landscape. The spectacular architecture with the transverse skywalk and the angled observation tower rises deep into the existing forest as a visible sign from afar. Inside the tilted bars of the permanent exhibition, the visitor is taken on a journey through the Black Forest.