TrailWest Bank, Frenchtown Branch Basic Info Reviews Routing Numbers Map & Direction Name: TrailWest Bank, Frenchtown Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 16600 Beckwith St Frenchtown, Montana 59834 Missoula County View other branches Phone: 406-626-4500 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer092900820YN092901560YY092905430YN From: To: