“The bridge, which connects the cities of Matsue and Sakaiminato, appears to go straight into the sky and suddenly drop off. Built high so that fishing boats can pass underneath, the structure fortunately isn’t quite as steep as it looks.
Nearly a mile long, the bridge has a gradient of 6.1 percent on one side and 5.1 percent on the other, according to Yahoo. Cars gradually ascend, making it less scary for drivers than the bridge appears when photos are taken from a straight-on angle. In pictures, Eshima Ohashi definitely earns its “roller coaster bridge” nickname.” Source