NCDOT, I have attached our 11 digit route id
Field is RouteClass, RouteQualifier, RouteNumber and then RouteInventory
We have two spots where Interstates are concurrent, but inventory direction is on opposite sides of the road. This order keeps the routes paired and prevents an inventory of the higher number trumping the opposite inventory side of the dominate pair. ie I-73 southbound is dominate over I-74 eastbound.
We have no exception table like Kansas.