See I'm not convinced he is bridge guy. Bridge Guy could be anyone, he is wearing what I think a lot of people would wear at that time of year, there is nothing distinctive about his clothes in the images we have.
The witness descriptions of Bridge Guy are all different so I don't think they are talking about the same person.
Also I don't think one person could have done this crime in the time frame and with two victims without restraining thek and there were apparently no signs of restraint.
I've also recently heard about Elvis Fields confessions to committing the crime on at least three occasions. He apparently said he gave Abby horns and there were two branches above her head. The scene imo was staged and the branches were not a cover up as apparently there were loads of leaves on the ground the killer(s) could have used.
The whole investigation stinks, stopping working with the FBI not following up on forensics, abby had a hard in her head that wasn't tested until trial. There are others hairs the FBI could test for dna but the police have said no.