Editing Interstate 15 (section)

===Montana===
{{Main|Interstate 15 in Montana}}
I-15 continues onward through {{convert|396|mi|km|0}} of [[Montana]] through the cities of [[Butte, Montana|Butte]], [[Helena, Montana|Helena]], and [[Great Falls, Montana|Great Falls]], intersecting with [[Interstate 90 in Montana|I-90]], [[I-115]], and [[I-315]]. At [[Sweet Grass, Montana|Sweet Grass]], I-15 terminates upon [[Sweetgrass–Coutts Border Crossing|crossing the Canadian border]] into the province of [[Alberta]]; however, I-15 signage is present on [[Alberta Highway 4]] southbound from [[Lethbridge]] to the [[Canada–United States border|Canadian border]].