****Here is what I wrote back then...__________________________________________________________________"...at first, I was pretty annoyed when I sat around today thinking about the strange LOUD noise I heard early this morning. A scraping metallic thundering sound was going on for what seemed like every 20-30 seconds. After about 70 comments so far ( 3:00 pm this afternoon ) - it was obvious that the mystery was solved in my book - Railroad Bridge. I sure hear it. I'm sure you all did.