Brenner Pass, Austria
ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins65% CONFIDENCEOverall confidence: 65%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence
BBT SE[2][3] revised regular train service to 2034 on October 20–21, 2026. December 31 is a year-precision timeline anchor; no exact opening day is published.At 55 km, with the Innsbruck bypass it forms the world's longest underground rail link, boring beneath the Alps between Austria and Italy. Estimated date.
≈$12.7B
1.00