To dream of an arch represents choices or a direction in life that demands respect. You may be noticing that you’re more important than others. You may be feeling a heightened sense of status, power, or respect from others. It may also reflect a feelings of being special.
Alternatively, it may reflect a person or situation that demands your respect or co-operation. You may have to show respect where it’s due or treat something like it’s more important than you are.