 DE 9A proceeds north @-@ northwest as a two @-@ lane road , passing through more industrial areas and crossing under I @-@ 495 again , this time underneath of the I @-@ 495 bridge over the Christina River . After this , the route crosses over both the Norfolk Southern 's New Castle Secondary and Shellpot Branch at grade crossings in marshland . The road continues between residential and commercial areas to the west and industrial areas to the east before terminating at both US 13 and DE 9 near the Christina River drawbridge leading into Wilmington 's central business district . 
