page_title: Basel–Biel/Bienne railway
section_title: History
hierarchical_section_title: Basel–Biel/Bienne railway / History
caption_attribution_description: Deutsch: Nördlich von Moutier befinden sich die Gorges de Moutier, eine weitere typische Klus mit imposanten Kalkfelsen
context_page_description: The Basel–Biel/Bienne railway is a standard gauge railway line of the Swiss Federal Railways and the BLS AG. It runs from Basel SBB along the Birs in the French-speaking Jura to Delémont and Biel/Bienne. The traffic on the line is shown in table 230 of the official timetable.
context_section_description: The line was built in several sections by the  Chemins de fer du Jura bernois (French for "Bernese Jura Railway", JB) and formed the main line of the company, which operated in the Bernese Jura. The Biel–Sonceboz–Tavannes line (which has since been bypassed; part of it now forms part of the Sonceboz-Sombeval–Moutier railway) and the Sonceboz–Convers branch line (which forms part of the line to La Chaux-de-Fonds) opened on 30 April 1874. The opening of the Basel–Delémont line followed on 23 September 1875. The gap between Tavannes and Delémont was further reduced on 16 December 1876 with the opening of the Tavannes–Court and Moutier–Delémont sections. A continuous connection from Biel to Basel was finally opened on 24 May 1877, with the commissioning of the Court–Moutier section.
  The route as described above was the shortest railway connection from Basel to Biel until the opening of the Grenchenberg tunnel in 1915. During the run up to the First World War, the northernmost rail link between Switzerland and France ran via Delle, using the Basel–Delémont section of the Jura Railway, the Delémont–Delle railway, the Belfort–Delle railway and the remaining part of Compagnie de l'Est’s Paris–Mulhouse railway that had not have been ceded to the German Empire with Alsace in 1871.
  The so-called Münster-Lengnau-Bahn (Moutier–Lengnau railway, MLB) was built to shorten the Delémont–Biel line and thus also the travel time from Biel to both Basel and Belfort. The approximately 13 kilometre-long line consists essentially of the almost 8.6 kilometre-long, single-track Grenchenberg Tunnel. The Berner Alpenbahn-Gesellschaft Bern–Lötschberg–Simplon (Bernese Alpine Railway Company Bern-Lötschberg-Simplon) built the MLB to improve access to its Lötschberg line. While the track is owned by the BLS, the SBB has operated trains on it since its opening in 1915.
  After the Second World War, the SNCF upgraded the Belfort–Mulhouse–Basel line, so that the line via Delle was reduced to a regional branch line. The Belfort–Delle line was closed to passenger traffic in 1992 and the Boncourt–Delle cross-border section followed in 1996. As part of the construction of the LGV Rhin-Rhône, the French section was reactivated as a feeder line in December 2018; the Boncourt–Delle section was reopened in December 2006 for symbolic reasons.
caption: The passage through the rocks between Roches and Moutier before the electrification of the line
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