Is the balcony facing the viaduct intersection good for feng shui? Park isolation

It generally depends on the size and distance of evil spirits. But according to your description, there is a park isolation, which should be a relatively large space. This is because Mingtang can hide wind and gather qi, and even if there is evil, it will slow down and dissipate in Mingtang. So don't worry. You can put tall green plants on the balcony. Plants with aura are most suitable for shielding evil spirits. Pay attention to big-leaved plants, which grow vigorously. I hope it helps you.