an Entity references as follows:
State Route 31 (SR 31) is a Washington state highway located entirely in Pend Oreille County. The highway, which is 26.79 miles (43.11 km) long, starts at an intersection with SR 20 in Tiger and travels north to the Canadian border north of Metaline Falls. At the border, SR 31 becomes British Columbia Highway 6 (BC 6).