The 108-year-old Tar Barrel Tunnel will soon be filled with dirt and concreted over, following the opening of the Ruakanakana Overpass. The oldest train tunnel on the Main North Line is officially retired. The Tar Barrel Tunnel on the Main North Line, between Picton and Christchurch, was damaged in the 2016 earthquake. Supplied The Tar Barrel Tunnel, the oldest on the Main North Line, will be filled with excavated material and sealed at either end. Some of that material was being used to backfill the old Tar Barrel Tunnel, which would be sealed at either end.

Source: Stuff May 25, 2021 02:02 UTC