NORTHWESTERN CORPORATION — Big Horn County, MT

Current as of source date Government source

Pipeline and Hazardous Materials Safety AdministrationOfficial agency material

Big Horn County, MTNORTHWESTERN CORPORATION (PHMSA OPID 31632) reported 39.871587 active Natural Gas pipeline miles in Big Horn County, MT (county FIPS 30003) in the public NPMS summary snapshot dated 2026-07-16. The snapshot includes active assets only and excludes permanently abandoned assets. Exact pipeline locations and restricted NPMS GIS data are not included.#