Located in Ningyuan Town, Ningnan County, Liangshan Prefecture, Sichuan Province, Ningbo Panzhihua zcb1-1 bid section of riverside expressway is about 4.9 km long and located around the county seat
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The project mainly includes Ningnan hub, Hengshan tunnel, Heishui River Tunnel and Heishui River Bridge with main span of 550m
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The planned construction period is 48 months and the contract cost is about 1.6 billion yuan
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This is Ningnan super large bridge of Ningnan hub interchange (K263 + 140 ～ k265 + 258), with a length of 2.118km, mainly consisting of a small amount of subgrade (169000 m3 of excavation and 239000 m3 of filling), Ningnan left line super large bridge (16 joints, 1655m), Ningnan right line super large bridge (15 joints, 1656m), and five ramps a, B, C, D and E
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Source: Ningnan government.
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