I have not been there since May, at that time driving back could take from 2 - 4 hours. If walking the bridge back to the USA it usually ranged from 5 to 15 minutes except holiday weeks like Christmas and Easter when it could take hours. This was due to many border agents being pulled for other duties or to other locations. Information from others I know that cross regularly say the wait for walking is none to very short at this time. I did not ask about driving time waits.