It's astounding to see how much engineering and construction have evolved from the early days of bridge building. However, not all problems have been resolved the same way; the biggest problem in cable bridge building is how do you get a pilot cable from one tower to the next? Previous solutions have included attaching the cable to a kite and flying it over (e.g. Niagara falls suspension bridge), carrying one end by helicopter (e.g. Akashi kaikyo bridge) and floating one end on a boat (e.g. Brooklyn bridge). The new Chinese bridge named Siduhe grand bridge has applied a unique solution to overcome this problem. They are using precision rockets to get the 3200ft cables across the 2,132ft valley below, the bridge stands completed as on July 2008.

This bridge is all set to make a record as the highest bridge ever constructed, when measured from the ground to the deck and as the first one to successfully use rockets to throw steel cables across a valley.

Via