This project is located exactly at the southest part of Sumatera Island. Section I has total length of 39.4km, start from Bakauheni Port to Sidomulyo. There are a lot of uniquely designed bridges in this project, cantilevered pier head bridge, 30m pier height, etc. Also the cutting works very remarkable. Some C4 have been used for blasted the hills since the final cut elevation is more than 35m below the existing ground level. Both structural and geotechnical engineers are pushed to their limit of their capabilities in terms of engineering judgment.