A very difficult route as it transverse high hills near Bintauran and very deep swamp conditions from Bukit Panggal to Penanjong junction. Piles at Penanjong flyover reached 60 metres (or 200 ft) at set and fill stabilisation was difficult to maintain with normal budget. The 34km long, four-lane highway had very gentle horizontal and vertical curves making it easier for overtaking and sufficient sight distances for a more relaxed drive. There were nine (9) bridges (constructed of prestressed beams and insitu RC. pavement slab) in the project. It included an elevated curved bridge fly-over at the Penanjong Junction. Optimum parameters of 100mph (161 kph) were adopted in the road flyover design to make driving less dangerous even at a higher speed. The present road speed limit is at 62mph (or 100kph) imposed.