Northrim Bank, Old Seward Highway Branch Basic Info Reviews Routing Numbers Map & Direction Name: Northrim Bank, Old Seward Highway Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 8730 Old Seward Highway Anchorage, Alaska 99516 Anchorage County View other branches Phone: 907-522-8886 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer125200905YN125200934YY325270049YN From: To: