Adopt-a-Highway Keeping Highway 10 Clean St. Mark’s volunteers meet each year to remove litter from a section of Highway 10 that passes through Orangeville. General Information St. Mark’s has adopted Highway 10 from the intersection of Highway 10 and Highway 9 to the intersection of Highway 10 and First Street. Parishioners meet throughout the year to remove garbage along this stretch of God’s creation.Contact(519)-941-0640office@saintmark.ca