The maximum speed limit on rural freeways and interstates in West Virginia is 70 miles per hour. Rural freeways are the sections of major highways that passing through rural and sparsely populated areas, and can safely allow faster driving.he maximum speed limit on rural freeways and interstates in West Virginia is 70 miles per hour. Rural freeways are the sections of major highways that passing through rural and sparsely populated areas, and can safely allow faster driving.