Erie is a city on the south shore of Lake Erie and the county seat of Erie County, Pennsylvania, United States. It is the fifth-most populous city in Pennsylvania and the most populous in Northwestern Pennsylvania with a population of 94,831 at the 2020 census. The Erie metropolitan area, equivalent to all of Erie County, had a population of 270,876 in 2020. Erie is located approximately 80 miles (130 km) from Buffalo, 90 miles (140 km) from Cleveland, and 120 miles (190 km) from Pittsburgh.
U.S. Route 20 or U.S. Highway 20 (US 20) is an east–west United States Numbered Highway that stretches from the Pacific Northwest east to New England. The "0" in its route number indicates that US 20 is a major coast-to-coast route. Spanning 3,365 miles (5,415 km), it is the longest road in the United States, and, in the east, the route is roughly parallel to Interstate 90 (I-90), which is the longest Interstate Highway in the U.S. There is a discontinuity in the official designation of US 20 through Yellowstone National Park, with unnumbered roads used to traverse the park.
New York State Route 14 (NY 14) is a state highway located in western New York in the United States. Along with NY 19, it is one of two routes to transect the state in a north–south fashion between the Pennsylvania border and Lake Ontario. The southern terminus is at the state line in the Chemung County town of Ashland, where it continues south as Pennsylvania Route 14 (PA 14). Its northern terminus is at a cul-de-sac on Greig Street in the Wayne County village of Sodus Point. NY 14 has direct connections with every major east–west highway in western New York, including Interstate 86 (I-86) and NY 17, U.S. Route 20 (US 20) and NY 5, and the New York State Thruway (I-90). It passes through two cities—Elmira and Geneva—and serves many villages as it traverses the state.
Pennsylvania Route 290 is a 9.17-mile-long (14.76 km) state highway located in the environs of Erie, Pennsylvania. The western terminus of the route is at Interstate 79 and Pennsylvania Route 5 in the neighborhood of Dock Junction. The eastern terminus is at Interstate 90 and Pennsylvania Route 430 southeast of downtown in Harborcreek Township.
Pennsylvania Route 99, officially SR 699, is a 21-mile-long (34 km) state highway located in western Pennsylvania. The southern terminus is at U.S. Route 6 and US 19 in Cambridge Springs. The northern terminus is at US 19 near Erie.
Pennsylvania Route 8 is a major 148.6-mile-long (239.1 km) state route in western Pennsylvania. Officially, PA 8 is named the William Flinn Highway.
Pennsylvania Route 66 (PA 66) is a 139.7-mile-long (224.8 km) state highway in Western Pennsylvania. Its southern terminus is at U.S. Route 119 just east of Interstate 70 (I-70) near New Stanton. Its northern terminus is at US 6 in Kane.
Pennsylvania Route 23 is an 81.14-mile-long (130.58 km) state highway in southeastern Pennsylvania. The route begins at PA 441 in Marietta and heads east to U.S. Route 1 at City Avenue on the border of Lower Merion Township and Philadelphia. PA 23 begins at Marietta in Lancaster County and continues east to Lancaster, where it passes through the city on a one-way pair of streets and intersects US 222 and US 30.
The Great Lakes Seaway Trail, formerly named and commonly known as the Seaway Trail, is a 518-mile (834 km) National Scenic Byway in the northeastern United States, mostly contained in New York but with a small segment in Pennsylvania. The trail consists of a series of designated roads and highways that travel along the Saint Lawrence Seaway—specifically, Lake Erie, the Niagara River, Lake Ontario, and the Saint Lawrence River. It begins at the Ohio state line in rural Erie County, Pennsylvania, and travels through several cities and villages before ending at the Seaway International Bridge northeast of the village of Massena in St. Lawrence County, New York. It is maintained by the non-profit Seaway Trail, Inc.
Pennsylvania Route 152 (PA 152) is a 25.3-mile-long (40.7 km) state highway located in the U.S. state of Pennsylvania. The route travels north–south from an interchange with PA 309 located in the Cedarbrook neighborhood of Cheltenham Township in Montgomery County north to another interchange with PA 309 located northeast of Telford in Bucks County. PA 152 is known as Limekiln Pike for most of its length. From the southern terminus, the route passes through suburban areas to the north of Philadelphia, serving Dresher, Maple Glen, and Chalfont. North of Chalfont, PA 152 runs through rural suburbs of Philadelphia before reaching Silverdale. Past here, the road continues northwest through Perkasie, where it turns southwest and passes through Sellersville before reaching its northern terminus.
Pennsylvania Route 832, known locally as Sterrettania Road and Peninsula Drive, is a state highway located in Erie County, Pennsylvania. Its northern terminus is at the entrance to Presque Isle State Park in Erie. The southern terminus is at PA 98, two miles (3 km) west of Sterrettania in Fairview Township. PA 832 has junctions with U.S. Route 20, PA 5 and PA 5 Alternate. PA 832 is exit 18 off Interstate 90 (I-90). PA 832 was designated in 1928 between PA 99 and Presque Isle. The route was extended south to US 20 by 1940. PA 832 was further extended to I-90 by 1959 and PA 98 by 1970.
Pennsylvania Route 299 is a 0.05-mile-long state highway located in Erie County in Pennsylvania. The route is the designation for the Staff Sergeant Jeremy R. Horton Memorial Bridge that carries Powell Avenue over two railroad lines in Millcreek Township. PA 299 was designated in 1930 between US 20 and PA 99, which is now PA 5 Alternate, running along Powell Avenue. In 2006, the current bridge over the railroad tracks was built. In 2011, all of PA 299 was decommissioned except for the Staff Sergeant Jeremy R. Horton Memorial Bridge, and is no longer signed as a traffic route. The section of Powell Avenue north of the bridge was realigned in 2012 as a result of runway expansion at Erie International Airport.
Pennsylvania Route 430 (PA 430) is a 13.70-mile-long (22.05 km) state highway located in Erie County, Pennsylvania. The western terminus is at US 20 in Wesleyville. The eastern terminus is the New York state line near Findley Lake, New York.
U.S. Route 202 is a US Highway running from New Castle, Delaware, northeast to Bangor, Maine. In the U.S. state of Pennsylvania, the route runs for 59 miles (95 km), from the Delaware state line in Bethel Township, Delaware County, to the New Hope–Lambertville Toll Bridge over the Delaware River in Solebury Township, where the route crosses into New Jersey. The highway runs through the western and northern suburbs of Philadelphia in the Delaware Valley metropolitan area, and serves as a toll-free bypass around the city, avoiding the busy traffic and congestion on Interstate 95 (I-95). It is signed north–south and follows a general southwest–northeast direction through the state.
U.S. Route 20 (US 20) is an east–west United States Numbered Highway in Pennsylvania, which clips the northwestern corner of the state, running entirely in Erie County. While it is part of the nation's longest road, it features the shortest segment of any two-digit U.S. Route in the commonwealth. Although bypassed by Interstate 90 (I-90) as the primary through route in the area, heavy traffic has led to nearly the entire highway being widened to four lanes in width.
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.
The Bayfront Parkway is a highway in Erie, Pennsylvania, in the United States, primarily running along the shore of Lake Erie's Presque Isle Bay. Carrying the state quadrant route designation of State Route 4034 (SR 4034), it continues as Interstate 79 (I-79) on the western end and the Bayfront Connector, part of Pennsylvania Route 290 (PA 290), on the eastern end.
Great Lakes Seaway Trail 
Lake Erie Circle Tour 
US 20 in Springfield Township 
I-79 / PA 290 in Erie 
NY 5 in North East Township 
