Illinois National Bank, West Wabash Branch Basic Info Reviews Routing Numbers Map & Direction Name: Illinois National Bank, West Wabash Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 3150 West Wabash Avenue Springfield, Illinois 62704 Sangamon County View other branches Phone: 217-747-8700 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer071107233YY071108355YN071109338YY081225707YN From: To: