Design of the Expo Bridge, Daejon, Korea

Expo Bridge was planned originally for an international exposition in Daejon, Korea, approximately 150 km south of Seoul. This twin arch bridge is situated over a small river and has a total length of approximately 330 m, including approach span. The twin arch bridge itself has a main span of 100 m. The main orthotropic steel deck is supported by 100 bundled CFRC (Center Fit Rope Core) suspender ropes with a diameter of 50 mm. The superstructure is supported by twin 32 m high steel arches. The overall width of the deck is 18 m, including 4.5 m pedestrian sidewalks on both sides. The two crossing arch members behave as a frame to support the superstructure, which is suspended from the arch members using 100 cables. The number of cables was selected to celebrate a centennial of participation by Korea in international expositions.