Shenzhen Road Construction, in joint venture with Yunnan Yuxi Road Construction Company, is using China's first Wirtgen SP 1500 slipform paver on a new 26km highway in Yunnan. The road replaces an existing winding highway through mountainous terrain with a more direct route to cope with the region's rising traffic volumes. Six bridges, from 20m to 80m in length, cross steep ravines.
The concrete highway will link the towns of Yuxi and Jiangchuan, 50km south of the provincial capital of Kunming.
It is classified as a secondary road, with 50% of the expected traffic likely to comprise trucks.
The remaining percentage will be made up of farm vehicles and private cars.
Two 11.4m wide lanes will be separated by a 1.5m wide barrier, giving a total road width of 22.8m.
Both the Wirtgen SP 1500 and a three year old SP 850 are currently paving a single lane to a width of 7.75m and a depth of 240mm in a single pass. As regulations stipulate that local contractors must be involved in highway construction, the remaining 3.65m on each lane will be laid manually.