Avoid sections of roads in Apple maps

There is a small section of the hiway that goes right thru the middle of DFW airport. Taking this section straight through has a toll of $18 as a deterrent to keep traffic in the airport controlled. The traffic on this section is always low or green and the navigation loves to route through this section because of that. There needs to be a way to tell the nav system to avoid this section of the road. I don’t want to avoid all hiways or all tolls, just this section. How can I block out this one section of road so the nav system avoids it for “through” traffic? Obviously routing a destination in the airport has to use it, but that doesn’t result in the huge toll.