SBB opens new double-track section between Grellingen and Duggingen

On the Basel SBB–Delémont–Biel/Bienne line, a roughly four-kilometre continuous double-track section was built through the Laufental valley between Grellingen and Duggingen, allowing trains to cross and in operation since 14 December 2025. The approximately CHF 133 million project, funded through the federal Rail Infrastructure Fund (BIF), enables a half-hourly long-distance service and additional through connections to Lausanne. Finishing works outside the track area continue until June 2026.