ABSTRACT
Figure 1 presents the ground profile and measurement results of road surface settlement in the fourth year of service. The ground can be roughly divided into two parts by the bridge at KP 8.3 km. The part between the interchange and bridge (3.7-km long) is soft ground consisting mainly of clay, while peat has accumulated thickly on the part between the bridge and box culvert
No. 24 (2.2-km long). Even though the road embankment height is almost uniform throughout the route, the difference in soil profiles is clearly visible in the road surface settlement. While the road surface settlement on clay ground ranged from several to 10 cm, significant settlement exceeding 40 cm was observed in peaty ground.
