First Interstate Bank Bigfork Main Branch ← View details 800 Grand Avenue, Bigfork, MT 59911 +1 406-837-1600 firstinterstatebank.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 04:30 pm Tuesday: 09:00 am — 04:30 pm Wednesday: 09:00 am — 04:30 pm Thursday: 09:00 am — 04:30 pm Friday: 09:00 am — 04:30 pm Your comments * — Required information