The first S-Bahn (city rail) train rolled through Hamburg from Altona to Ohlsdorf in 1907. The S-Bahn continues to be a modern means of transportation to this day. And it has excellent future prospects. It serves around 730,000 people a day in this port city of northern Germany, including workers, students, schoolchildren, and tourists. The Jungfernstieg station, which is located right on the bank of the Binnenalster in the city center, is one of the largest in the system. After opening in 1975, it now needed new walls and flooring, as did the neighboring Stadthausbrücke station. No easy task, if transportation services were to continue largely uninterrupted. Deutsche Bahn (German Rail), which runs Hamburg’s S-Bahn system, asked construction experts from Porsche Consulting for support in planning and carrying out the work. Logistics played a major role in the project, in order to save both time and money – and especially to minimize inconvenience for passengers.