The backlog of vessels waiting to enter or exit the Southwest Pass of the Mississippi River has almost cleared today and the Coast Guard is projecting that it should be completely cleared by mid-day Saturday, weather permitting.Since the Southwest Pass was reopened Wednesday afternoon to one-way vessel traffic, 70 vessels entered and 69 vessels exited the Mississippi River. Today there are 16 awaiting entry and 13 waiting to depart.Bisso Marine, the company contracted to raise and remove the Lee III from the shipping channel…