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The contract period is 40 months, and the contracted amount is 138.045 million US dollars. The owner unit is the Senegal Transportation and Infrastructure Construction Department, and the window unit is China Road and Bridge Engineering Co., Ltd.The second section of our construction has a total length of 40KM, a subgrade width of 24.6 meters and a design speed of 130km/h, including subgrade works, pavement works, box and culvert works, other drainage structures and traffic ancillary works, and all bridge works of the TT project. .Among them, there are 32 bridges, 9 main bridges, 19 pedestrian bridges and 4 non-overpasses.There are 53 culverts, 40 drainage box culverts, 6 passages, 7 interchange and service areas, and 7 drainage culverts in the toll area.The sand fills 1.192 million square meters, the red clay gravel is 1.53 million square meters, and the asphalt mixture is 231,200 square meters.8951 tons of steel and 77,000 square meters of concrete.