DE 261 begin at an interchange with US 202 and the northern terminus of DE 141 north of Alapocas Run State Park near Fairfax , heading northeast on four @-@ lane divided Foulk Road . The road heads near business parks , becoming an undivided road . The route continue through the suburban Brandywine Hundred area , passing residences along with a few businesses . DE 261 remain a four @-@ lane undivided road through this area , occasionally widening into a divided highway at intersections . The route intersect several roads including Murphy Road , Shipley Road , and Silverside Road . Between Shipley and Silverside roads , the road pass to the west of Brandywine High School . Farther northeast , DE 261 come to the intersection with DE 92 , at which point it turn north and become a two @-@ lane undivided road that pass more homes . The route end at the Pennsylvania state line .