 Delaware Route 261 ( DE 261 ) and Pennsylvania Route 261 ( PA 261 ) , also known as Foulk Road , is a 6 @.@ 88 @-@ mile ( 11 @.@ 07 km ) state highway running through Delaware and Pennsylvania . DE 261 runs 4 @.@ 62 miles ( 7 @.@ 44 km ) through New Castle County , Delaware from an interchange with U.S. Route 202 ( US 202 ) and DE 141 north of Interstate 95 ( I @-@ 95 ) near Fairfax , Delaware , a community north of Wilmington , northeast to the Pennsylvania state line . The road runs through suburban areas of Brandywine Hundred as a four @-@ lane road south of DE 92 and a two @-@ lane road north of DE 92 . At the Pennsylvania state line , Foulk Road becomes PA 261 and continues 2 @.@ 26 miles ( 3 @.@ 64 km ) through Bethel Township in Delaware County , intersecting PA 491 in Booths Corner before ending at an interchange with US 322 . 
 Delaware Route 261 ( DE 261 ) and Pennsylvania Route 261 ( PA 261 ) , also known as Foulk Road , <a href='drop_aux' title='1'><mark>is</mark></a>a 6 @.@ 88 @-@ mile ( 11 @.@ 07 km ) state highway running through Delaware and Pennsylvania . DE 261 runs 4 @.@ 62 miles ( 7 @.@ 44 km ) through New Castle County , Delaware from an interchange with U.S. Route 202 ( US 202 ) and DE 141 north of Interstate 95 ( I @-@ 95 ) near Fairfax , Delaware , a community north of Wilmington , northeast to the Pennsylvania state line . The road <a href='uninflect' title='2'><mark>runs</mark></a> through suburban areas of Brandywine Hundred as a four @-@ lane road south of DE 92 and a two @-@ lane road north of DE 92 . At the Pennsylvania state line , Foulk Road <a href='uninflect' title='3'><mark>becomes</mark></a> PA 261 and <a href='uninflect' title='4'><mark>continues</mark></a> 2 @.@ 26 miles ( 3 @.@ 64 km ) through Bethel Township in Delaware County , intersecting PA 491 in Booths Corner before ending at an interchange with US 322 . 
Delaware Route 261 ( DE 261 ) and Pennsylvania Route 261 ( PA 261 ) , also known as Foulk Road , a 6 @.@ 88 @-@ mile ( 11 @.@ 07 km ) state highway runnin through Delaware and Pennsylvania . DE 261 runs 4 @.@ 62 miles ( 7 @.@ 44 km ) through New Castle County , Delaware from an interchange with U.S. Route 202 ( US 202 ) and DE 141 north of Interstate 95 ( I @-@ 95 ) near Fairfax , Delaware , a community north of Wilmington , northeast to the Pennsylvania state line . The road run through suburban areas of Brandywine Hundred as a 4 @-@ lane road south of DE 92 and a two @-@ lane road north of DE 92 . At da Pennsylvania state line , Foulk Road become PA 261 and continue 2 @.@ 26 miles ( 3 @.@ 64 km ) through Bethel Township in Delaware County , intersecting PA 491 in Booths Corner before ending at an interchange wit US 322 .