Traffic was shut down on US 6 in both directions for about four hours in Liberty Township, just west of Meridian Road, near Whispering Sands Mobile Home Park, Sunday evening after a natural gas line was struck. Porter County Sheriffs Police Sgt. Larry LaFlower told the Region News Team crews working on the new pipeline from Canada to Griffith were doing some excavating and struck a natural gas line, resulting in a gas main break in that area. The highway was shut down from about 4:30pm to 8:30 pm for safety reasons. NIPSCO responded and made repairs, police say, and there were no injuries reported.