Design of Geometric and Rigid Pavement Thickness on Jalan Lingkar Barat Sp. Sports Center - Bukit Sulap STA 0+100 - STA 7+583 Lubuklinggau City, South Sumatera Province

Road construction is one of the government's efforts to facilitate the mobilization of the Indonesian people, both economically and socially. The purpose of this study was to design the geometric and rigid pavement thickness on Jalan Lingkar Barat SP Sports Center Bukit Sulap STA 0+100 to STA 7+583 Lubuklinggau City, South Sumatra Province. The method used in this study was reviewing the vehicle volume, road terrain, and vehicle traffic load data. The analyses used were horizontal and vertical alignment calculations, and pavement thickness calculations. The generated design was referred to the standard criteria issued by the Indonesian Ministry of Public Works and Public Housing. The result from reviewing the vehicle volume, road terrain, and vehicle traffic load exhibited a total annual average daily traffic of 24404.06 SMP/day. Therefore, this road has been classified as Jalan Arteri Kelas I. From the alignment calculation, the road was designed with 11 bends: 4 Spiral-Circle-Spiral (SCS) bends, 4 Full-Circle (FC) bends, and 3 Spiral-Spiral (SS) bends, with an average speed recommended in the plan was 70 km/h. As from the pavement thickness calculation, the pavement designed was the rigid pavement with a thickness of 19 cm and a bottom layer of sand gravel mixture with a thickness of 15 cm.