Inspectioncurrent
NPMS FIPS 30097 / OPID 31632
NORTHWESTERN CORPORATION — Sweet Grass County, MT
Current as of source date Government source
Pipeline and Hazardous Materials Safety AdministrationOfficial agency material
View source Sweet Grass County, MTNORTHWESTERN CORPORATION (PHMSA OPID 31632) reported 73.234538 active Natural Gas pipeline miles in Sweet Grass County, MT (county FIPS 30097) 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.#