After this intersection , Old Baltimore Pike continue past suburban neighborhoods , gaining a center left @-@ turn lane and intersecting Salem Church Road . Farther east , the highway reach a junction with DE 273 in a wooded area . At this point , the road narrow to two lanes again and heads into the community of Christiana . Here , the highway intersect DE 7 , where it turn north and follow that route through residential areas . The road come to an interchange with DE 1 to the west of the Christiana Mall , where DE 7 continue north along with DE 1 and Old Baltimore Pike reach a dead end .