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The contractor has begun to erect the rebar and formwork at the north end of the bridge, while piles are been driven at the south end of the bridge.
Form work for the walls has to be quite sturdy to handle the large height of concrete that will be poured. It may not look it in this photo, but the walls will be almost 20 feet tall. The plywood wall forms are reinforced with steel channels. The channels on either side of the wall are then tied together with steel rods which keep the formwork from bowing out when the concrete is poured. In addition to this the formwork is heavily braced with against the cofferdam steel to provide further support (not shown in this photo). All this support will help produce walls that are straight and true to the dimensions on the construction plans.
On the backside of the wall formwork a scaffold is built to allow the laborers to work at the top of the wall when the concrete is poured.