GEOMETRIC REDESIGN OF THE PROBOLINGGO – BANYUWANGI TOLL ROAD PACKAGE 3 AT STA 27+000 – STA 32+000 USING THE AASHTO 2018 METHOD

Abstract

The implementation of toll road construction often encounters various technical problems. One of the problems is the large-scale excavation and embankment activities, therefore this study creates several alternative routes which will then be subjected to multi-criteria analysis. Alternative routes are selected from several criteria, which will then be subjected to geometric calculations of the road and the volume of excavation and embankment. This study uses the 2018 AASHTO guidelines to plan alternative routes. The results of the geometric calculations of the road produce speeds of 100 km/h and 80 km/h with a radius of 300 to 400 m. The planned horizontal curves are of the S-C-S type as many as 5 pieces, while the vertical curves consist of 3 convex and 2 concave. Based on the calculation of the volume of excavation and embankment of the planned route, the excavation was obtained at 1,043,842.09 m3 and the embankment at 970,672.38 m3 with a ratio of 1075: 1000 approaching the ideal result of 1: 1, while the existing route obtained an excavation of 2,482,003.46 m3 and an embankment of 338,273.67 m3 with a ratio of 7337: 1000 which indicates an imbalance.