In order to shorten the journey time of vehicles and not have to straighten the highway, the North – South expressway construction component project Mai Son – National Highway 45 must drill 2 tunnel through the mountainincluding Tam Diep tunnel (Tam Diep city, Ninh Binh) and Thung Thi tunnel (Ha Trung district, Thanh Hoa).
With a tunnel length of 680 meters, both pipes running in parallel (50 meters apart), Thung Thi tunnel is the longest tunnel of this component expressway project and also one of the longest tunnels of the North – North Expressway project. South after the traffic.
Taking PV Tien Phong to go through the tunnel and survey and record the construction work in the tunnel, Mr. Vu Sy Chien (photo), Deputy Director of the Construction Management Board, Deo Ca Group said, in order to expand the surface area. cut horizontally according to the design, after punching the first tunnel, the construction unit continues to drill, cut, and lower to widen the tunnel.
According to the set schedule, Thung Thi tunnel will be completed in December 2022, however, the Project Management Board of the Expressway component section Mai Son – National Highway 45, Thang Long Project Management Board, Ministry of Transport (investor) and Deo Ca Group (the contractor) are striving to be 3 months ahead of schedule – to be completed in September 2022.
The highway running into Thung Thi tunnel at both ends is also being urgently constructed in time for tunneling.
The North – South expressway construction component project, section Mai Son (Ninh Binh) – National Highway 45 (Thanh Hoa) has a length of 63 km, started in September 2020, and scheduled to be completed in December 2022. The total investment of the project is more than 12,100 billion VND of public investment capital. The construction item of Thung Thi tunnel belongs to the construction and installation package number 12, worth 600 billion VND, the location of the tunnel is located near the intersection between the highway and National Highway 217 to go to the western districts of Thanh Hoa, including: Ha Trung, Vinh Loc, Yen Dinh, Tho Xuan, Cam Thuy, Quan Son – Na Meo border gate (Laos border).
Expressway project Mai Son – National Highway 45 has a scale of 6 lanes, road bed cross section of 32.2 m, design speed 120 km/h; The first investment phase (opening to traffic in December 2022) is to build 4 lanes with a cross-section of 17 m, reaching a design speed of 80 km/h. Once completed, the project will shorten the travel time between Hanoi – Thanh Hoa (150 km) by 2 hours, instead of more than 3 hours as at present. The project also has the goal of creating a driving force for socio-economic development, attracting investment for localities
at Blogtuan.info – Source: Soha.vn – Read the original article here
