Philadelphia to Harrisburg Main Line

The Philadelphia to Harrisburg Main Line is a rail line owned and operated by Amtrak in the U.S. state of Pennsylvania. This is the only electrified Amtrak service outside of the main line of the Northeast Corridor. The line runs from Philadelphia, where it meets the Northeast Corridor at Zoo interlocking (MP 1.9), west to Harrisburg (MP 104.6), where electrification ends. It is part of the longer Keystone Corridor, which continues west to Pittsburgh along the Norfolk Southern Railway's Pittsburgh Line. This section is sometimes referred to as "Keystone East" and is part of Amtrak's Keystone Service.

The line runs along the route of the former Pennsylvania Railroad Main Line and passes through the Philadelphia Main Line, the suburban region named for it. The Pennsylvania Railroad had originally electrified this line in the 1930s, but it fell into disuse in the 1980s under Amtrak.

Amtrak and the Pennsylvania Department of Transportation restored electrical service in October, 2006. This allows speeds up to 110 miles per hour.

The line received about $26 million from the 2009 Federal American Reinvestment and Recovery Act that was used to eliminate the last three grade crossings, which will advance the goal of 125-mph operations, reduce overall trip times, and improve service reliability. The grade crossing were located in Lancaster county and the last was closed in 2014.

...
Wikipedia