The other major problem with highways in the northern part of the country that are below grade is snow removal.
Buffalo has an expressway that runs from the airport to downtown that is below grade. In the winter they have to blow the snow into dump trucks to clear the highway. It is just a poor design for that part of the country. Detroit probably has to do the same thing.
Below grade makes sense for sound damping and safety. (Crashes can only go so far before hitting dirt)
Detroit doesn’t get nearly as much snow as Buffalo.
Baltimore has a false start freeway that goes nowhere. A cop told me that he loves chases where the idiot goes there. The road has a particular bump that is guaranteed to cause a spin out at 80 mph or above.
They just roll behind and laugh.