Keystone Corridor

Keystone Corridor
Keystone Corridor
	The Keystone Corridor in Rosemont, Pennsylvania
Overview
Status	Operating
Owner	SEPTA (Suburban Station–30th Street Station); Amtrak (30th Street Station–Harrisburg); Norfolk Southern (Harrisburg–Pittsburgh);
Locale	Pennsylvania, U.S.
Termini	Philadelphia Suburban Station; Pittsburgh Union Station;
Stations	39 (15 Amtrak, 19 SEPTA, 5 shared)
Service
Type	Higher-speed rail, commuter rail, inter-city rail
Services	Amtrak Keystone Service; Amtrak Pennsylvanian; SEPTA Paoli/Thorndale Line;
Technical
Line length	349 miles (562 km)
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Electrification	Overhead line, 12 kV 25 Hz AC (east of Harrisburg)
Operating speed	110 mph (180 km/h) (top)
Route map
	NS Fort Wayne Line
	to CP Penn Junction
	NS Pittsburgh Line
	Amtrak ownership
	NS New Holland
	Secondary
	Reading line
	to Reading, PA
	Norristown
	High Speed Line
	Northeast Corridor
	to Boston South
	Northeast Corridor
	to Washington, D.C.

The Keystone Corridor is a 349-mile (562 km) railroad corridor between Philadelphia and Pittsburgh, Pennsylvania, that consists of two rail lines: Amtrak and SEPTA's Philadelphia-to-Harrisburg main line, which hosts SEPTA's Paoli/Thorndale Line commuter rail service, and Amtrak's Keystone Service and Pennsylvanian inter-city trains; and the Norfolk Southern Pittsburgh Line. The corridor was originally the Main Line of the Pennsylvania Railroad.

Since 2006, the line has been one of the high-speed corridors designated by the Federal Railroad Administration (FRA). The 24-mile section of track from Lancaster to Parkesburg permits trains of up to 110 miles per hour (180 km/h), while the 19-mile section between Paoli and Philadelphia allows up to 90 miles per hour (140 km/h).

Amtrak runs two intercity rail services along the Keystone Corridor: the Harrisburg-to-New York City Keystone Service and the Pittsburgh-to-New York City Pennsylvanian. SEPTA operates daily Paoli/Thorndale commuter rail service between Philadelphia and Thorndale on the Philadelphia-to-Harrisburg main line. The towns along this stretch form a socio-cultural region called the "Philadelphia Main Line".

The tracks from Pittsburgh to Harrisburg are owned and maintained by Norfolk Southern, which acquired them from Conrail. They include the Horseshoe Curve west of Altoona. The tracks between Harrisburg and Philadelphia are owned and maintained by Amtrak, and are the only part of the Keystone Corridor that is electrified. The tracks join the Northeast Corridor at Zoo Interlocking near the Philadelphia Zoo and 30th Street Station.

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