You could drive over this bridge many times and never see its secret revealed, but wait for a boat to pass and you’d be in for a beautiful surprise. The Twin Sails Bridge spans the Backwater Channel in Holes Bay, a waterway traveling between Poole and Hamworthy in Dorset, England. The “double leaved bascule” bridge opens to allow boats to pass, revealing two large triangular roadways which look much like the sails of a boat. At night, the bridge is lit in brilliant colors.
The bridge, which opens up to 15 times per day, takes 2 minutes to fully open. The “sails” are as big as those on a large yacht, measuring 75 feet each.
The design isn’t just beautiful, but smart too. Because most of the road weight is carried close to the hydraulic rams which do the lifting, the bridge can open to a wide passage using less power.
(via Amusing Planet)