Finely balanced on the new Forth Road Bridge

The new Forth Road Bridge is taking shape. The support columns are in but not joined. They are building the road deck outwards from each one and eventually the sections will join up. Notice that the method involves balancing the deck equally on each side. There will be no resultant moment so the column will not fall. Each section is a cable-stay design. The diagonal stays have a vertical component compressing the concrete in the column. Concrete is strong under compression. The horizontal components are equal and opposite pushing in on the column from left and right. The final thing to note is the weird picture effect. The car was moving from right to left. The tops of the cones are bent out of shape. I think it suggests that the camera reads the CCD row by row from top to bottom because the bottoms end up lined up with the column, The cone would not have been thus aligned when I first started taking the photograph.