(Portland, OR)  --  Police are seeking the public's help in their search for a man who jumped off a bridge into the Willamette River.  Police say the man jumped from the Broadway Bridge in late August and hasn't been seen since.  Search crews haven't been able to find a body.  Police have released an image from a surveillance camera showing a man with white hair and a short beard wearing blue jeans and a white t-shirt.  Anyone with information is urged to contact police.