Derry Township is a township in Westmoreland County, Pennsylvania, United States. It surrounds the borough of Derry, which is a separate municipality. As of the 2020 census, the township population was 13,631.
Pennsylvania Route 51 is a major state highway in Western Pennsylvania. It runs for 89 miles (143 km) from Uniontown to the Ohio state line near Darlington, where it connects with Ohio State Route 14. PA 51 is the termination point for Pennsylvania Route 43, Pennsylvania Route 48 and Pennsylvania Route 88. The route is a major connection from Uniontown and the rest of Fayette County to Pittsburgh.
Pennsylvania Route 48 is an 18.9-mile-long (30.4 km) state highway located in the Pittsburgh, Pennsylvania area. The route is predominantly a two-lane highway as it runs through McKeesport and other suburbs. The entire routing of PA 48 is part of the Orange Belt, both reaching their southern termini at Pennsylvania Route 51, southeast of Elizabeth. Until 1998, the northern terminus of PA 48 was at the intersection of Old Haymaker and Center Roads, about 1/2 mile from its current terminus at U.S. Route 22 Business in Monroeville.
Pennsylvania Route 56 is a 108-mile-long (174 km) state highway located in west central Pennsylvania. Its western terminus is at the eastern end of the C.L. Schmitt Bridge in New Kensington. Its eastern terminus is on U.S. Route 30 (US 30) west of Bedford.
Pennsylvania Route 271 is a north–south state route located in Western Pennsylvania. Its southern terminus is at PA 711 in Oak Grove in Ligonier Township, and its northern terminus is at U.S. Route 219 (US 219) in Northern Cambria. The route was designated on May 27, 1935 in coordination with the release of a new state road map.
Pennsylvania Route 403 is a north–south state route in Somerset, Cambria and Indiana counties of Pennsylvania. The southern terminus is at U.S. Route 30 (US 30) in the hamlet of Kantner in Quemahoning Township. The northern terminus is at US 119 near Marion Center.
Pennsylvania Route 130 (PA 130) is a 49-mile-long (79 km) state highway located in Allegheny and Westmoreland counties in Pennsylvania. The western terminus is at PA 8 in Pittsburgh, and the eastern terminus is at PA 381 near Kregar.
Pennsylvania Route 156 is a 16.4-mile-long (26.4 km) state highway located in Westmoreland, Armstrong and Indiana counties in Pennsylvania. The southern terminus is at PA 981 in Avonmore. The northern terminus is at U.S. Route 422 /PA 56 in Shelocta.
Pennsylvania Route 201, designated by the Pennsylvania Department of Transportation as State Route 201, abbreviated PA 201, is a 25-mile-long (40 km) south-north state highway located in Southwestern Pennsylvania in the counties of Fayette and Westmoreland. The southern terminus is at U.S. Route 119 /PA 711 in Connellsville. The highway heads northwest and meets up with PA 51 twice at two separate locations and Interstate 70 (I-70) in Rostraver Township. The northern terminus is at PA 136 in Rostraver Township.
Pennsylvania Route 217 is a 21-mile-long (34 km) state highway located in Westmoreland and Indiana counties in Pennsylvania. The southern terminus is at U.S. Route 30 near Latrobe. The northern terminus is at PA 286 near Jacksonville.
Pennsylvania Route 259 is a 33.4-mile-long (53.8 km) state highway located in Westmoreland and Indiana counties in Pennsylvania. The southern terminus is at U.S. Route 30 west of Ligonier. The northern terminus is at US 422 in Cherryhill Township on the border of Yellow Creek State Park.
Pennsylvania Route 286 is a 69-mile-long (111 km), east–west state highway located in Allegheny, Westmoreland, Indiana, and Clearfield counties in Pennsylvania. The western terminus is at U.S. Route 22 in Monroeville. The eastern terminus is at US 219 near Burnside.
Pennsylvania Route 356 is a 32.5-mile-long (52.3 km) state highway located in Westmoreland, Allegheny, Butler, and Armstrong counties in Pennsylvania. The southern terminus is at PA 66 near Oklahoma. The northern terminus is at U.S. Route 422 (US 422) near Butler.
Pennsylvania Route 366 is a 14.8-mile-long (23.8 km) state highway located in Allegheny and Westmoreland Counties in Pennsylvania. The western terminus is at PA 28 in Tarentum. The eastern terminus is at PA 66 in Murrysville. The last 1/2 mile of the Red Belt route of the Allegheny County belt system runs along PA 366 in Tarentum from its eastbound beginning at the PA 28 interchange to the intersection of Freeport Rd. and Ross St. where the Red Belt terminates.
Pennsylvania Route 381 is a 49.3-mile-long (79.3 km) state highway located in Fayette, and Westmoreland counties in Pennsylvania. The southern terminus is the West Virginia state line near Elliottsville, Pennsylvania, where it continues as Preston County Route 8 to its southern terminus at WV 26 in Brandonville, West Virginia. The northern terminus is at U.S. Route 30 (US 30) near Ligonier.
Pennsylvania Route 653 (PA 653) is a 26-mile-long (42 km) state highway in Fayette and Somerset counties in Pennsylvania, United States. The western terminus is at PA 381 in Springfield Township. The eastern terminus is at Mason Dixon Highway in Garrett.
Pennsylvania Route 711 is a 55-mile-long (89 km), north–south state highway located in Fayette, Westmoreland, and Indiana counties in Pennsylvania. The southern terminus is at U.S. Route 119 /PA 201 in Connellsville. The northern terminus is at PA 403 in East Wheatfield Township.
Pennsylvania Route 819 is a 46.6-mile-long (75.0 km) state highway located in Fayette and Westmoreland counties in Pennsylvania, United States. The southern terminus is at PA 201 in Vanderbilt. The northern terminus is at PA 66 in Oklahoma.
Pennsylvania Route 981 is a state highway which runs 50.4 miles (81.1 km) across Westmoreland County, in southwestern Pennsylvania, United States. The highway begins at PA 51 in Rostraver Township, Pennsylvania, and runs northward across Westmoreland County, passing through the towns of Mount Pleasant, Latrobe, and New Alexandria before ending at PA 819 in Salina.
U.S. Route 119 (US 119) travels through Connellsville, Greensburg, and Punxsutawney, and bypasses Uniontown and Indiana. There are numerous other boroughs and villages along its 133-mile (214 km) route in the Keystone State. The southern entrance of US 119 is at the West Virginia state line one-half-mile south of Point Marion. The northern terminus is at US 219 two miles (3 km) south of DuBois, Pennsylvania. US 119 is in the National Highway System from the West Virginia state line to Exit 0 of PA Turnpike 66, and from US 22 to US 219. From US 22 to US 219, the highway carries the name of the Buffalo-Pittsburgh Highway; from US 22 to PA 56, it is also known as the Patrick J. Stapleton Highway; near Uniontown, it bears the name George C. Marshall Parkway.
US 119 at Moyer 
PA 31 near Mount Pleasant 
US 30 near Youngstown 
