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本(ben)♏项目流程主跨27.755km。Y231坪(ping)(ping)(ping)城(cheng)(cheng)至中堡公(gong)路(lu)起点位(wei)于(yu)(yu)坪(ping)(ping)(ping)城(cheng)(cheng)乡坪(ping)(ping)(ping)🦹城(cheng)(cheng)村(cun)(cun)(cun),途经水沟(gou)村(cun)(cun)(cun)、火石洞村(cun)(cun)(cun)、胡(hu)家庄(zhuang)、袁家庄(zhuang),终点位(wei)于(yu)(yu)中堡镇塘土湾(wan)村(cun)(cun)(cun),接G312线(xian)K238＋700,路(lu)线(xian)全长24.748km;坪(ping)(ping)(ping)城(cheng)(cheng)乡至骟马坪(ping)(ping)(ping)段起点位(wei)于(yu)(yu)坪(ping)(ping)(ping)城(cheng)(cheng)乡坪(ping)(ping)(ping)城(cheng)(cheng)村(cun)(cun)(cun),与G338线(xian)相接,经水沟(gou)村(cun)(cun)(cun),止于(yu)(yu)骟马坪(ping)(ping)(ping),路(lu)线(xian)全长3.007km。

本(ben)的(de)项目Y231坪城至中堡公(gong)路(lu)全线(xian)按三级公(gong)路(lu)技(ji)术标准(zhun)建设(she),设(she)计行车(che)速(su)宽(kuan)30km/h,路(lu)基宽(kuan)7.5m,路(lu)面宽(kuan)6.5m,路(lu)肩宽(kuan)2×0.5m；坪城镇至骟马坪段旅游线(xian)按四六级农村公(gong)路(lu)系统标建造(zao),设(she)计行车(che)速(su)度20km/h,路(lu)基宽(kua✱n)7.5m,路(lu)肩宽(kuan)2×0.5m。路(lu)面结构为(wei)3cm厚AC-10沥青混凝土上面层+4cm厚。