The Lupu Bridge (simplified Chinese: 卢浦大桥; traditional Chinese: 盧浦大橋; pinyin: Lúpǔ Dàqiáo), named after Luwan District, is a through arch bridge over the Huangpu River in Shanghai, China, connecting the city's Huangpu and Pudong districts. It is the world's second longest steel arch bridge, after the Chaotianmen Bridge in Chongqing. The bridge has a total length including approach spans of 3,900 m (12,795 ft) and opened on June 28, 2003. The main bridge structure is 750m long including the two side spans of 100m each, and the main span of 550 metres (1,804 ft) over the Huangpu River is 32 metres (105 ft) longer than the previous record holder for the longest arch bridge, the New River Gorge Bridge in Fayetteville, West Virginia. It cost 2.5 billion yuan (US$302 million), including US$78.04 for the main steel structure alone. It is located adjacent to the former Expo 2010 site and served as the centrepiece of the world exposition in Shanghai.