From looking at the Trenitalia website it does not appear that Bardi has a train station.  It looks like you would have to take a train from Bardi to Parma which is about 3 1/2 hours.  Parma is 50 km from Bardi.  There is a bus that runs from Parma to Bardi but I don't know any more than that.  If you are staying at a hotel in Bardi you can email them and ask them how to get the bus from Parma to Bardi.