SBB doubles track between Opfikon and Kloten for CHF 77 million

SBB is converting the previously single-track, 1.6 km line between Opfikon Riet and Kloten to double track for around CHF 77 million, enabling a quarter-hourly service between Zurich and Kloten as part of the nationwide "Ausbauschritt 2035" expansion programme. Construction started in mid-November 2024; a multi-week full closure followed in early summer 2026, and all bridges along the route (including Riethofstrasse, Balz-Zimmermannstrasse, and the A51 motorway bridge) are being rebuilt for double-track operation. Completion is planned for the end of 2026.