Bnc National Bank lobby hours, directions, reviews, phone number and online banking information for the Mandan Branch office of Bnc National Bank located at. BNC National Bank, Mandan Branch at Sunset Dr Nw, Mandan, ND has $K goodtimephotography.us this bank, find bank financial info, routing numbers. Bank Branch. See the branch BNC National Bank Mandan Sunset Dr Nw Mandan ND information. Mandan is the name of this branch BNC National Bank.