 Old Baltimore Pike begins at the Delaware – Maryland state line near Newark , Delaware , where the highway continues west into that state as MD 281 . The road heads northeast from the state line through wooded residential areas as a two @-@ lane undivided road , intersecting <unk> Chapel Road before passing south of Iron Hill Park . Old Baltimore Pike crosses DE <unk> and enters rural areas . Here , the roadway passes <unk> 's Bridge , a historic battle site of the American Revolutionary War . It then crosses Norfolk Southern 's <unk> Secondary railroad line and encounters DE 72 . 
