U.S. Route 6 (US 6) travels east–west near the north edge of the U.S. state of Pennsylvania from the Ohio state line near Pymatuning Reservoir east to the Mid-Delaware Bridge over the Delaware River into Port Jervis, New York. It is the longest highway segment in the commonwealth. Most of it is a two-lane rural highway, with some freeway bypasses around larger towns. Except east of Dunmore, where it is paralleled by Interstate 84 (I-84), it is the main route in its corridor. What is now I-80—the Keystone Shortway—was once planned along the US 6 corridor as a western extension of I-84. The corridor was originally the Roosevelt Highway from Erie, Pennsylvania, to Port Jervis, New York, designated Pennsylvania Route 7 (PA 7) in 1924. The PA 7 designation soon disappeared, but, as US 6 was extended and relocated, the Roosevelt Highway followed it. The Pennsylvania section of US 6 was renamed the Grand Army of the Republic Highway in 1946; this name was applied to its full transcontinental length by 1953. US 6 meets with US 19 near Meadville, where it turns north with US 19 to a point east of Edinboro. There it turns east (while US 6N heads west to US 20 at West Springfield) and passes through the Northern Tier. At Towanda, it turns more southeasterly to reach Dunmore, then turning back northeast out of Dunmore to Carbondale and generally east and southeast to New York. US 6 fully encompasses two Pennsylvania Scenic Byways: the Gateway to the Endless Mountains Scenic Byway along the bypass of Tunkhannock and the Governor Casey Scenic Byway along the freeway portion in Lackawanna County between I-81 in Dunmore and PA 247 in Jessup. At in length, US 6 is the longest numbered highway in Pennsylvania. Route description Ohio to Warren US 6 enters Pennsylvania from Ohio in Crawford County, heading southeast as a two-lane undivided road through farmland and woodland to the north of Pymatuning State Park, which is home to Pymatuning Reservoir. The route heads into the borough of Linesville, where it heads southeast through developed areas of the borough on Penn Street before turning east onto East Erie Street, passing north of Conneaut Area Senior High School. The road continues southeast through more rural areas as it heads away from the state park, passing over the Canadian National Railway's Bessemer Subdivision railroad line. US 6 intersects the southern