The Bridgehampton National Bank, Mattituck Branch Basic Info Reviews Routing Numbers Map & Direction Name: The Bridgehampton National Bank, Mattituck Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 10900 Main Road Mattituck, New York 11952 Suffolk County View other branches Phone: 631-298-0190 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer021406667YY021413155YY021413935YY021414280YY From: To: