Open seven days a week, 24 hours per day, the Coutts Highway/Land Border Office is located in Southern Alberta, on the Canadian side of the US Port, Sweetgrass in Montana. NEXUS lanes into the US are open seven days a week, and Monday through Friday (except holidays) from 3-5 pm into Canada. Access this border crossing via Hwy 15 northbound from Montana, or Hwy 4 southbound from Alberta.