Since May 2013, Metro-North workers have replaced 97,961 ties, laid 16.5 miles of continuous welded rails, rebuilt 88 switches, renewed and/or upgraded 32 railroad crossings, and performed 2,905 welds on joints that connect stretches of track with one another.
[Video]: NYC subway Track Geometry Car ride
Take a ride on a Track Geometry Car, part of the specialized fleet that inspects the rails of the NYC subway.