Tokyo Gate Bridge is the latest and the greatest
Tokyo Gate Bridge that connects Wakasu and Tokyo Bay landfill area is one very unique bridge from its shape. In order to let ships pass underneath, it has to be high enough but it cannot interefare with airroute that lies up above.
So, it has a very unique shape like two gigantic T-Rex kissing each other. How they made it was even more unique. They have built this humongus bridge elsewhere and brought this 7000 tons bridge over. The bridge has built-in sensors everywhere and monitors itself from potential damage. How smart is that!