Savings Institute Bank and Trust Company, Savings Institute Bank And Trust Com Basic Info Reviews Routing Numbers Map & Direction Name: Savings Institute Bank and Trust Company, Savings Institute Bank And Trust Com Main Office: Yes Service: Full Service Brick and Mortar Office Location: 803 Main Street Willimantic, Connecticut 06226 Windham County View other branches Phone: 860-423-1603 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer011104283YN011501598YN211174181YY211174301YN211572615YN From: To: