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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??(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??(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?(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)”???！　〗??(jin)后?(hou)??，立??(li)足??(zu)“三??(san)江??(jiang)交??(jiao)匯??(hui)上??(shang)海??(hai)之??(zhi)門??(men)”的??(de)大??(da)吳??(wu)淞??(song)地??(di)區(qū)??(qu)??，外??(wai)環(huán)??(huan)隧??(sui)道??(dao)將??(jiang)與??(yu)郊??(jiao)環(huán)??(huan)隧??(sui)道??(dao)共??(gong)同?(tong)為??(wei)上??(shang)海?(hai)北??(bei)部??(bu)地??(di)區(qū)??(qu)構??(gou)筑??(zhu)起??(qi)更??(geng)可?(ke)靠??(kao)的??(de)貨??(huo)運??(yun)通?(tong)道??(dao)??，并??(bing)進??(jin)一??(yi)步??(bu)提??(ti)升??(sheng)上??(shang)海??(hai)外??(wai)環(huán)??(huan)北??(bei)段??(duan)通?(tong)行??(xing)效??(xiao)率??(lv)??，串??(chuan)聯?(lian)寶?(bao)山??(shan)城??(cheng)區(qū)?(qu)、郵??(you)輪?(lun)港??(gang)門??(men)戶?(hu)、吳??(wu)淞??(song)創(chuàng)?(chuang)新??(xin)城??(cheng)、三??(san)岔??(cha)港??(gang)生??(sheng)態(tài)?(tai)門?(men)戶??(hu)四??(si)大??(da)未??(wei)來??(lai)城??(cheng)市??(shi)組??(zu)團??(tuan)??。??。