Complex sentence: While train service was terminated in the 1950s, and freight ceased to travel the line by the late 90s, the tracks remained in place until late 2012 when they were removed and made into a bike trail.
Split into simpler sentences: While train service was terminated in the 1950s, and freight ceased to travel the line by the late 90s. The tracks remained in place until late 2012 when they were removed and made into a bike trail.