Southern Michigan Bank & Trust, Westland Branch Basic Info Reviews Routing Numbers Map & Direction Name: Southern Michigan Bank & Trust, Westland Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 58665 U.S. 131 Three Rivers, Michigan 49093 St. Joseph County View other branches Phone: 269-278-8604 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer072402283YY072402610YY072414459YN From: To: