CompletedTarget completion: Dez. 2037Completion delayed significantly from original 2028 target
A second trunk line for Munich's S-Bahn network, running 10 km underground through the city centre with three new stations. The project addresses chronic capacity bottlenecks on the existing single-trunk S-Bahn system. Originally planned for completion by 2028, the timeline has been repeatedly pushed back due to geological challenges and cost increases.