Broadway National Bank, Seguin Branch Basic Info Reviews Routing Numbers Map & Direction Name: Broadway National Bank, Seguin Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 1475 East Court Street Seguin, Texas 78155 Guadalupe County View other branches Phone: 830-379-9200 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer114000556YN114015606YN114021933YY314974071YN From: To: