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苏州南环路东延独墅湖桥隧道工程于2006年正式开工建设。该桥隧工程全长7.37km,其中隧道长3.46km,是苏州城建史上第1条隧道和目前国内最长的城市隧道。
Suzhou South Loop East Extension Dushu Lake Bridge tunnel project officially started construction in 2006. The bridge and tunnel project has a total length of 7.37km, of which the tunnel is 3.46km long. It is the first tunnel in the history of urban construction in Suzhou and the longest urban tunnel in China at present.