Construction Progress
The four-track section between Overbrook and Paoli is numbered sequentially from the southernmost track (number 1 track) to the northernmost track (number 4 track).
Between March 7 and June 27, 2005, Amtrak worked on the number 4 track between Lancaster and Parkesburg, and from June 27 to September 2, 2005, they worked on number 1 track. A work gang with a track laying system (TLS) installed concrete crossties, new continuous welded rail, and new ballast, allowing for 110 miles per hour (180 km/h) . The track layout at Lancaster station was simplified so that trains no longer have to take a diverging route to access the station platforms. Because tracks 2 and 3 have been removed, tracks 1 and 4 are the only tracks in this section.
Between October 3, 2005 and mid-December, Amtrak worked on the number 2 track from Paoli to a point between Narberth and Merion stations. On March 20, 2006, Amtrak started working on the number 3 track, starting within Paoli interlocking and working east towards Overbrook. As of April 6, 2006, a track laying system (TLS) has completed work to approximately milepost 16.7. 110-mph service started on October 30, 2006 following completion of a $145 million upgrade of the 104-mile line. Push-pull express trains will cut journey time from the current two hours to 90 minutes. Local service will improve to 105 minutes. Three weekday and two weekend roundtrips will be added as well.
Read more about this topic: Keystone Corridor
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