I put Bergamo in our trip plan for September, but in looking up the train schedules to fine-tune our plans, I have discovered that no trains are scheduled on this section after June 8. I cannot figure out from the schedules currently available when this closure might end. I did find this Trenord website with current information, but it does not go far enough into summer to be helpful.
https://www.trenord.it/en/double-tracking-bergamo-ponte-san-pietro-and-bergamo-junction/
I previously found some information on closures on major cross-border train routes into and out of Switzerland on the SBB website, but this does not include the Regionale train routes in Italy.
https://www.sbb.ch/en/travel-information/rail-traffic-information/timetable-change/europe.html
I have found some information on Trenitalia, in Italian, but it does not include the closure that begins June 8, which is the one that concerns me.
https://www.trenitalia.com/it/informazioni/Infomobilita/notizie-infomobilita.html.html
Does anyone have better information? I am thinking that if I cannot find the details and dates, I should skip the stop in Bergamo. It was to be an intermediate stop between Locarno and Malcescine, and I do not want it to get complicated by a bus transfer or long detours. Easier to just make our stopover in Brescia.