List of Interstate Highways in Pennsylvania

Interstate 70 (I-70) is a portion of the Interstate Highway System that runs from near Cove Fort, Utah, at a junction with I-15 to Baltimore, Maryland. It crosses the Northern Panhandle of West Virginia through Ohio County and the city of Wheeling. This segment is the shortest of all states through which I-70 passes, crossing West Virginia for only 14.45 miles (23.26 km). The Fort Henry Bridge carries I-70 from Wheeling Island across the Ohio River and into downtown Wheeling before the freeway enters the Wheeling Tunnel. I-470, a southerly bypass of Wheeling and the lone auxiliary Interstate Highway in West Virginia, is intersected near Elm Grove. Before crossing into Pennsylvania, I-70 passes The Highlands, a major shopping center in the panhandle, and the Bear Rocks Lake Wildlife Management Area. On average, between 27,000 and 53,000 vehicles use the freeway every day.

West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States. It is bordered by Pennsylvania to the north and east, Maryland to the east and northeast, Virginia to the southeast, Kentucky to the southwest, and Ohio to the northwest. West Virginia is the 10th-smallest state by area and ranks as the 12th-least populous state, with a population of 1,793,716 residents. The capital and largest city is Charleston.

Donegal Township is a township in Washington County, Pennsylvania, United States. The population was 2,389 at the 2020 census.

Interstate 70 (I-70) is a part of the Interstate Highway System that runs from Cove Fort, Utah, to Baltimore, Maryland. In Maryland, the Interstate Highway runs 93.62 miles (150.67 km) from the Pennsylvania state line in Hancock east to the Interstate's eastern terminus near its junction with I-695 at a park and ride in Baltimore. I-70 is the primary east–west Interstate in Maryland; the Interstate Highway connects Baltimore—and Washington, D.C., via I-270—with Western Maryland. The Interstate serves Frederick and Hagerstown directly and provides access to Cumberland via its junction with I-68 at Hancock. I-70 runs concurrently with its predecessor highway, U.S. Route 40 (US 40), from Hancock to Indian Springs in Washington County and from Frederick to West Friendship in Howard County.

Maryland is a state in the Mid-Atlantic region of the United States. It borders Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to its east. With a total land area of 12,407 square miles (32,130 km2), Maryland is the 8th smallest state by land area, but with a population of over 6,177,200, it ranks as the 18th most populous state and the 5th most densely populated. Baltimore is the largest city in the state, and the capital is Annapolis. Among its occasional nicknames are Old Line State, the Free State, and the Chesapeake Bay State. It is named after Henrietta Maria, the French-born queen of England, Scotland, and Ireland, who was known then in England as Mary.

Warfordsburg is an unincorporated community in Bethel Township, Fulton County, Pennsylvania, United States, just north of the Mason-Dixon line, near Interstate 70, and readily accessible to U.S. Route 40, the historic National Road, just across the Maryland state line. The zip code is 17267.

The Pennsylvania Turnpike is a toll highway operated by the Pennsylvania Turnpike Commission (PTC) in the U.S. state of Pennsylvania. A controlled-access highway, it runs for 360 miles (580 km) across the state. The turnpike's western terminus is at the Ohio state line in Lawrence County, where the road continues west as the Ohio Turnpike. The eastern terminus is at the New Jersey state line at the Delaware River–Turnpike Toll Bridge over the Delaware River in Bucks County, where the road continues east as the Pearl Harbor Memorial Extension of the New Jersey Turnpike.

New Stanton is a borough in Westmoreland County, Pennsylvania, United States. The population was 2,173 at the 2010 census. New Stanton is often used as a control city in western parts of Pennsylvania, as I-70 joins the Pennsylvania Turnpike (I-76) eastbound towards Breezewood in New Stanton, and is a free highway westbound.

Ohio, officially the State of Ohio is a state in the Midwestern United States. Of the fifty U.S. states, it is the 34th-largest by area. With a population of nearly 11.8 million, Ohio is the seventh-most populous and tenth-most densely populated state. Its capital and largest city is Columbus, with the Columbus metro area, Greater Cincinnati, and Greater Cleveland being the largest metropolitan areas. Ohio is bordered by Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the west, and Michigan to the northwest. Ohio is nicknamed the "Buckeye State" after its Ohio buckeye trees, and Ohioans are also known as "Buckeyes". Its state flag is the only non-rectangular flag of all the U.S. states.

New Jersey is a state situated within both the Mid-Atlantic and Northeastern regions of the United States. It is the most densely populated U.S. state, and is situated at the center of the Northeast megalopolis, the most populous American urban agglomeration. New Jersey is bordered on its north and east by the state of New York; on its east, southeast, and south by the Atlantic Ocean; on its west by the Delaware River and Pennsylvania; and on its southwest by Delaware Bay and the state of Delaware. At 7,354 square miles (19,050 km2), New Jersey is the fifth-smallest state in land area, but with close to 9.3 million residents as of the 2020 United States census, its highest decennial count ever, ranks 11th in population. The state capital is Trenton, and the most populous city is Newark. New Jersey is the only U.S. state in which every county is deemed urban by the U.S. Census Bureau, with 13 counties included in the New York metropolitan area, seven counties in the Philadelphia metropolitan area, and with Warren County constituting part of the rapidly industrializing Lehigh Valley metropolitan area.

Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania and the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. It is one of the most historically significant cities in the United States and served as the nation's capital until 1800. Philadelphia is the nation's sixth-largest city with a population of 1,603,797 as of the 2020 census. Since 1854, the city has been coextensive with Philadelphia County, the most populous county in Pennsylvania and the urban core of the Delaware Valley, the nation's seventh-largest and one of the world's largest metropolitan regions with 6.245 million residents. Philadelphia is known for its extensive contributions to American history, especially the American Revolution, and for its contemporary influence in business and industry, culture, sports, and music.

Morgantown is a census-designated place in Caernarvon Township, located in southern Berks County, Pennsylvania. It is located partially in Caernarvon Township in Lancaster County. As of the 2010 census, the population was 826 residents.

Reading is a city in and the county seat of Berks County, Pennsylvania, United States. The city had a population of 95,112 at the 2020 census and is the fourth-largest city in Pennsylvania after Philadelphia, Pittsburgh, and Allentown. Reading is located in the southeastern part of the state and is the principal city of the Greater Reading Area, which had 420,152 residents in 2020.

U.S. Route 15 is a 791.71 mi (1,274.13 km)-long United States highway, running from Walterboro, South Carolina, north to Painted Post, New York. In Pennsylvania, the highway runs for 194.89 miles (313.65 km), from the Maryland state line just south of Gettysburg, north to the New York state line near Lawrenceville.

U.S. Route 220 is a U.S. Highway that is a spur route of US 20. It runs from Rockingham, North Carolina, north to South Waverly, Pennsylvania. In the state of Pennsylvania, the route runs 248 miles (399 km) from the Maryland border in Cumberland Valley Township, Bedford County northeast to an interchange with Interstate 86 (I-86)/New York State Route 17 in South Waverly, Bradford County a short distance south of the New York border. Through the state, US 220 passes through the cities and towns of Bedford, Altoona, State College, Lock Haven, Williamsport, and Towanda. US 220 is concurrent with the entire completed Pennsylvania segment of I-99 between I-70/I-76 in Bedford and I-80 near Bellefonte. US 220 is also a freeway around Bedford, along the I-80 concurrency between Bellefonte and Mill Hall, between Mill Hall and Jersey Shore, from the western end of Williamsport to near Halls, and near the New York border. The remainder of US 220 in Pennsylvania is mostly a two-lane surface road.

Williamsport is a city in, and the county seat of, Lycoming County, Pennsylvania, United States. As of 2020, it had a population of 27,754. It is the principal city of the Williamsport Metropolitan Statistical Area, which has a population of about 114,000. Williamsport is the larger principal city of the Williamsport-Lock Haven Combined Statistical Area, which includes Lycoming and Clinton counties.

Pennsylvania Route 147 is a north–south route that runs for 58.3 miles (93.8 km) along the east shore of the Susquehanna River in central Pennsylvania, United States. The southern terminus is at an interchange with U.S. Route 22 /US 322 in Reed Township. The northern terminus is at an interchange with Interstate 80 (I-80) and I-180 in Turbot Township.

Milton is a borough in Northumberland County, Pennsylvania, United States, on the West Branch Susquehanna River, 50 miles (80 km) north of Harrisburg, located in Central Pennsylvania's Susquehanna River Valley. It is approximately 10 miles upriver from the mouth of the West Branch Susquehanna River and about 30 miles downriver of Williamsport.

Interstate 176 (I-176) is a spur route of eastern I-76 in Berks County, Pennsylvania. I-176, known locally as the Morgantown Expressway, travels from I-76 in Morgantown north to U.S. Route 422 (US 422) in Cumru Township in Berks County, a suburban township just outside the city of Reading; the entire length of the highway is just over 11 miles (18 km). The highway was originally known as Interstate 180 (I-180) or the "Reading Spur" when the Pennsylvania Turnpike was part of I-80S but was redesignated to its present-day number in 1964 when I-80S became I-76.

King of Prussia is a census-designated place in Upper Merion Township in Montgomery County, Pennsylvania, United States. As of the 2020 census, its population was 22,028. The community took its unusual name in the 18th century from a local tavern named the King of Prussia Inn, which was named after King Frederick the Great of Prussia. Like the rest of Montgomery County, King of Prussia continues to experience rapid development. One of the largest shopping malls in the United States, King of Prussia, is located here. Also located here is the headquarters of the Nuclear Regulatory Commission Region I. King of Prussia is considered to be an edge city of Philadelphia, consisting of large amounts of retail and office space situated at the convergence of four highways.

The Pennsylvania Turnpike is a toll highway operated by the Pennsylvania Turnpike Commission (PTC) in the U.S. state of Pennsylvania. A controlled-access highway, it runs for 360 miles (580 km) across the state. The turnpike's western terminus is at the Ohio state line in Lawrence County, where the road continues west as the Ohio Turnpike. The eastern terminus is at the New Jersey state line at the Delaware River–Turnpike Toll Bridge over the Delaware River in Bucks County, where the road continues east as the Pearl Harbor Memorial Extension of the New Jersey Turnpike.

York Township is a township in York County, Pennsylvania, United States. The township is a suburb of The City of York. The population was 29,737 at the 2020 census.

Pennsylvania Route 181 is a 9-mile-long (14 km) north–south state route in York County in south central Pennsylvania. Its southern terminus is at Interstate 83 Business and U.S. Route 30 in North York. Its northern terminus is at the southern terminus of PA 382 in York Haven. PA 181 heads north from US 30 as a four-lane divided highway concurrent with I-83 Bus to an interchange with I-83, where I-83 Bus. reaches its northern terminus. From here, PA 181 continues north as a two-lane undivided road through suburban areas, intersecting PA 238 in Emigsville and PA 921 in Manchester. The route runs through rural land before it comes to York Haven.

Manchester Township is a township in York County, Pennsylvania, United States. The population was 19,511 at the 2020 census.

York is a city in, and the county seat of, York County, Pennsylvania, United States. Located in South Central Pennsylvania, the city's population was 44,800 at the time of the 2020 census, making it the tenth largest city in Pennsylvania.

Pittsburgh International Airport, formerly Greater Pittsburgh International Airport, is a civil–military international airport in Findlay Township and Moon Township, Pennsylvania. Located about 10 miles (15 km) west of downtown Pittsburgh, it is the primary international airport serving the Greater Pittsburgh Region as well as adjacent areas in West Virginia and Ohio. The airport is owned and operated by the Allegheny County Airport Authority and offers passenger flights to destinations throughout North America and Europe. PIT has four runways and covers 10,000 acres (4,000 ha).