As seen on www.WJON.com. These photographs were taken around 5pm on March 17.  By midnight that evening the ice sheet, which was about a half-mile long,  had slipped past the bridge footings. (Update: The truth is, this was a fairly dangerous photo-shoot. I was in the midst of these icy waters and perched on this ice ledge when I realized that if the ice were to snap forward through the bridge footings, all of the pressure of a half-mile long ice flow could spring  forward at a speed that might overcome my kayak…