This bridge that harnesses both solar and wind energy has been designed by Italian architects.
The structure represents a bridge with large wind turbines mounted under it, between the pillars. The bridge will traverse a valley with large open space and the wind turbines will operate at high altitude where the speed of wind is higher, thus more green energy will be collected.
In addition, the "Solar Wind" will be able to harness solar energy, since its entire road will be covered with a dense network of solar cells. The latter will be coated with a see-through and highly resistant type of plastic.
It was said that the bridge will be able to generate 40 million kWh per year! (This would power half of the United States -- the largest energy consumer -- for the entire year.)