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　　2003年?(nian)建??(jian)成??(cheng)通??(tong)車??(che)的??(de)外??(wai)環(huán)??(huan)隧??(sui)道??(dao)是??(shi)中??(zhong)國?(guo)首??(shou)條?(tiao)采??(cai)用??(yong)沉??(chen)管??(guan)法??(fa)施??(shi)工??(gong)的??(de)特??(te)大祝(da)型??(xing)越??(yue)江??(jiang)隧??(sui)道?(dao)??，曾??(zeng)是??(shi)上??(shang)海??(hai)北??(bei)部??(bu)地??(di)區(qū)??(qu)唯??(wei)一??(yi)的??(de)大?(da)型??(xing)貨??(huo)運??(yun)車??(che)輛?(liang)越??(yue)江??(jiang)通??(tong)道??(dao)??。??據(jù)??(ju)統(tǒng)??(tong)計??(ji)??，外??(wai)環(huán)?(huan)隧??(sui)道??(dao)歷??(li)年?(nian)車??(che)流??(liu)量??(liang)峰?(feng)值??(zhi)近??(jin)3000萬?(wan)輛??(liang)??，為??(wei)通??(tong)車??(che)初??(chu)期??(qi)的??(de)2.4倍??(bei)??，大??(da)型??(xing)貨??(huo)車??(che)(含??(han)集??(ji)卡??(ka))約??(yue)占??(zhan)流?(liu)量??(liang)的??(de)80%??。多??(duo)年??(nian)來??(lai)由??(you)于??(yu)超??(chao)負??(fu)荷??(he)運??(yun)營??(ying)等??(deng)各??(ge)種??(zhong)原??(yuan)因秘(yin)??，隧??(sui)道??(dao)留??(liu)下??(xia)沉??(chen)管?(guan)接??(jie)頭??(tou)滲??(shen)漏??(lou)、路??(lu)面??(mian)損?(sun)壞??(huai)等??(deng)“歲??(sui)月??(yue)痕??(hen)跡??(ji)”??。　　中??(zhong)新??(xin)網(wǎng)??(wang)上??(shang)海??(hai)3月??(yue)22日?(ri)電??(dian) (記??(ji)者??(zhe) 陳??(chen)靜??(jing))歷??(li)時??(shi)365天?(tian)??，上??(shang)海??(hai)S20外??(wai)環(huán)??(huan)隧??(sui)道??(dao)大??(da)修??(xiu)工?(gong)程??(cheng)正??(zheng)式??(shi)完??(wan)工??(gong)??，22日??(ri)該??(gai)隧??(sui)道??(dao)恢??(hui)復??(fu)通??(tong)車??(che)??。??。