上海市政管理部门在2005年再投入约200万元资金,对延安路高架及内环线高架符合设置要求的路段增设防噪屏,以改善周边楼房住家的生活环境。其中内环线就有14处路段被列入这次安装范围,共计长度达1122m。上海将对内环线的14处路段添设防噪屏 In 2005, Shanghai municipal administrations invested about 2 million yuan to add anti-noise screens to the elevated sections of Yan’an Road and elevated elevated inner ring lines in order to improve the living environment of the houses in the surrounding buildings. Among them, there are 14 sections of the inner ring were included in the scope of this installation, a total length of 1122m. Shanghai will add anti-noise screen to 14 sections of Inner Ring Road