中交二公局承建的西藏林芝至米林機場專用公路B標項目包括19.748公里路基路面工程。項目處于喜馬拉雅山脈、念青唐古拉山脈、橫斷山脈的交匯部，平均海拔達到3000米，橫跨雅魯藏布江，地形起伏大，河谷深切，屬典型的高山峽谷地貌，其中雅魯藏布江大橋是全線最長橋梁。
　　CCCC Second Highway Engineering Co., Ltd. undertook Section B of Special Highway for Nyingchi Mainling AirportinTibet, which includes 19.748km subgrade and pavement engineering. The project is located in the junction of the Himalaya Mountains, Nianqingtanggula Mountains andHengduan Mountains , with an average elevation of 3000m. It spans the YarlungZangboRiver, with undulating terrain and deep river valley. It is a typical alpine canyon landform, and YarlungZangboRiverBridgeis the longest bridge in the whole line.