Allegheny County is a county in Pennsylvania, United States. It is located in Southwestern Pennsylvania. As of the 2020 census, the population was 1,250,578, making it the state's second-most populous county, after Philadelphia County. Its county seat and most populous city is Pittsburgh, Pennsylvania's second most populous city. Allegheny County is the center of the Pittsburgh, PA metropolitan statistical area and the Pittsburgh media market.
Westmoreland County is a county in the Commonwealth of Pennsylvania, United States, located in the Pittsburgh Metropolitan Statistical Area. As of the 2020 census, the population was 354,663. The county seat is Greensburg and the most populous community is Hempfield Township. It is named after Westmorland, a historic county of England.
East Pittsburgh is a borough in Allegheny County, Pennsylvania, United States, approximately 11 miles (18 km) southeast of the confluence of the Monongahela and the Allegheny rivers at Pittsburgh. The population in 1900 stood at 2,883, and in 1910, at 5,615. As of the 2020 census, the borough population was 1,927, having fallen from 6,079 in 1940. George Westinghouse erected large works there which supplied equipment to the great power plants at Niagara Falls and for the elevated and rapid-transit systems of New York City. Nearby, the George Westinghouse Bridge over Turtle Creek is a prominent fixture in the area, which is very near the borough of Braddock.
Elizabeth is a borough in Allegheny County, Pennsylvania, United States, on the east bank of the Monongahela River, where Pennsylvania Route 51 crosses, 15 miles (24 km) upstream (south) of Pittsburgh and close to the county line. The population was 1,398 at the 2020 census. The borough of Elizabeth is entirely contained within the 15037 USPS ZIP code. The local school district is the Elizabeth Forward School District. The borough is home to neighborhoods Walker Heights and Town Hill. Elizabeth Borough is the birthplace of Town Hill Hockey established in 1978.
Penn Hills is a township with home rule status in Allegheny County, Pennsylvania, United States. The population was 41,059 as of the 2020 census. A suburb of Pittsburgh, Penn Hills is the second-largest municipality in Allegheny County.
Springdale Township is a township in Allegheny County, Pennsylvania, United States. It contains the two communities of Orrville and Harwick. The population was 1,636 at the 2010 census.
Tarentum is a borough in Allegheny County in the U.S. state of Pennsylvania. It is 22 miles (35 km) northeast of Downtown Pittsburgh, along the Allegheny River. Tarentum was an industrial center where plate glass and bottles were manufactured; bricks, lumber, steel and iron novelties, steel billets and sheets, sack and wrapping paper were also produced.
Freeport is a borough in Armstrong County, Pennsylvania, United States. It is situated along the Allegheny River in the southwestern corner of the county. The population was 1,736 at the 2020 census.
Parker is a city located in Armstrong County, Pennsylvania, United States. It is in the extreme northwestern portion of the county. The population was 695 at the 2020 census. The city was named for Judge John Parker, a lead surveyor of Lawrenceburg and founder/owner of Parker's Landing, the two villages combined to create Parker.
Foxburg is a borough in Clarion County, Pennsylvania, United States. It is located along the east bank of the Allegheny River, about 2 miles (3 km) north of the mouth of the Clarion River. As of the 2020 census it had a population of 181.
New Kensington is a city that is located in Westmoreland County, Pennsylvania, United States. It is situated along the Allegheny River, 18 miles (29 km) northeast of Pittsburgh.
Smithton is a borough in Westmoreland County, Pennsylvania, United States. The population was 399 at the 2010 census. As of 2018, the population was listed at 378. Smithton has its own post office, with zip code 15479, and is serviced by Yough School District.
The Allegheny County Belt System color codes various county roads to form a unique system of routes in Allegheny County, Pennsylvania, and around the city of Pittsburgh.
The Montour Trail is a multi-use recreational rail trail near Pittsburgh, Pennsylvania. It was formerly the Montour Railroad.
Allegheny Islands State Park is a 43-acre (17 ha) Pennsylvania state park in Harmar Township, Allegheny County, Pennsylvania in the United States. The undeveloped park is composed of three alluvial islands located in the middle of the Allegheny River northeast of Pittsburgh. The islands are just north of the boroughs of Oakmont and Plum, and southwest of Cheswick. Bridges for the Pennsylvania Turnpike and the Bessemer and Lake Erie Railroad Branch of the Canadian National Railway cross the Allegheny River at the middle island.
Pennsylvania Route 56 is a 108-mile-long (174 km) state highway that is located in west central Pennsylvania in the United States.
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.
Penn Avenue is a major arterial street in Pittsburgh and Wilkinsburg, in Pennsylvania. Its western terminus lies at Gateway Center in downtown Pittsburgh. For its westernmost ten blocks it serves as the core of the Cultural District with such attractions as Heinz Hall, the Benedum Center and the Byham Theater as well as the David L. Lawrence Convention Center and the Heinz History Center bordering it. Exiting downtown it is the major route through the city's Strip District, Lawrenceville, Bloomfield, Garfield and East Liberty neighborhoods. Its eastern portion exits the city at Wilkinsburg where it continues to exist as Penn Avenue with a numbering system that begins anew using small numbers as it approaches Interstate 376 the "Parkway East". Penn Avenue is about 8.7 miles (14.0 km) long.
The Judge J. Frank Graff Bridge is a truss bridge that carries U.S. Route 422 (US 422) and Pennsylvania Route 28 (PA 28) across the Allegheny River. It connects Manor Township and North Buffalo Township, Pennsylvania. It was constructed in 1974 as part of a freeway bypass of Kittanning, Pennsylvania. The structure is named for Frank Graff, an Armstrong County Court of Common Pleas Judge who later rose to become a member of the Pennsylvania Superior Court.
The following is a list of former state routes in Pennsylvania. These roads are now either parts of other routes or no longer carry a traffic route number. This list also includes original routes of numbers that were decommissioned and later reactivated in other locations in which most of these are still active today.
