Wikipedia:WikiProject U.S. Roads/Pennsylvania/Selected article/April 2014

Delaware Route 261 (DE 261) and Pennsylvania Route 261 (PA 261), also known as Foulk Road, is a 6.88 mi state highway running through Delaware and Pennsylvania. DE 261 runs 4.62 mi 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 mi through Bethel Township in Delaware County, intersecting PA 491 in Booths Corner before ending at an interchange with US 322.

DE 261 was originally designated along Foulk Road in the 1930s. In the 1960s, most of the route was widened into a four-lane road. The southern terminus at US 202 was reconstructed into an interchange in the 2000s. PA 261 was first designated in 1928 along Foulk Road between the Delaware border and PA 61 and PA 161 in Chelsea. The route was extended north along Valley Brook Road to US 1 in Chester Heights by 1940. The northern terminus of PA 261 was moved to its current location by 1980.