– upgrading cuttings, bridges and culverts. The highway is subject to frequent landslides and washouts. In April 2008, the section of the highway passing through Simbu Province was impassable at three separate points over different periods. The most serious of these destroyed a 150-metre section of the highway at Gera village, 10 km east of Kundiawa, on 11 April; this cut off the upper Highlands provinces from all road transport. See also References Road transport in Papua New Guinea