Complex sentence: The line formerly ran from Northallerton to on the Settle-Carlisle Railway but, the track between Redmire and Garsdale has been lifted and several bridges and viaducts demolished.
Split into simpler sentences: The line formerly ran from Northallerton to on the Settle-Carlisle Railway. However, the track between Redmire and Garsdale has been lifted and several bridges and viaducts demolished.