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映汶高速公路起于都江堰至映秀高速公路龙溪隧道出口,经映秀、银杏、桃关、草坡、绵虒、玉龙,止于汶川县城南凤坪坝,全长48.27km。为提高映汶高速公路抗自然灾害能力,全线多处路段采用顺河高架、半路半桥和隧道等结构形式通过,并23次往返跨越岷江,有桥梁39座11.3km、隧道9座25.5km,桥隧总长达36.8km,桥隧比高达76.3%。
Ying-Wen Expressway runs from Dujiangyan to Yingxiu Expressway Longxi tunnel exit, the Yingxiu, Ginkgo, Peach off, Caopao, Mian, Yulong, ending in Wenchuan County Fengyan south, a total length of 48.27km. In order to enhance the capacity of anti-natural disasters of the Yan-Wen Expressway, various road sections across the board adopt the structural forms of semi-bridges along the river, semi-half-bridges and tunnels, and cross over the Minjiang River 23 times with 39 bridges, 11.3km, 9 tunnels 25.5km, The total length of the bridge and tunnel is 36.8km, and the bridge and tunnel ratio is as high as 76.3%.