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Why should Nanjing West Main Road be blasted?

In addition to the reasons mentioned on the first floor, the viaduct construction also occupies the ground lane, which makes it impossible to adapt to the current traffic flow. In addition, the main road of rapid transformation in the east of the city is connected by three tunnels, and the effect is very good, so the bridge high tunnel construction is carried out. Generally speaking, the design of 14 and 15 years ago has been unable to adapt to the current traffic conditions.