The highest highway tunnel is expected to be completed in September

January 7th, reporter learned from the Provincial Department of transportation, as the world’s highest elevation of the road tunnel, highway 309 line road to hydrophyllaceae Dora Zaduo (hereinafter referred to as multihetero highway) long pull mountain tunnel, is expected to be completed acceptance at the end of September this year.
it is reported that the long pull mountain tunnel is a control project of highway 309 line multihetero highway, is the world’s highest elevation of the road tunnel. Last October 26th multihetero highway of Lancang River Tunnel opened in October 30th, has completed the inspection and acceptance of multihetero highway roadbed. Pull the remaining 260 meters long mountain tunnel excavation task (a total length of 2400 meters, 4499 meters above sea level) due to tunnel complex geological conditions, affected by water inrush and fault zone and surrounding rock changes frequently and rich in water and other factors, the tunnel construction progress is slow, is expected to the end of September this year will be officially completed.