The Böckten embankment is located on the 500 Basel–Olten railway line, between Sissach and Gelterkinden, in the section km 22.50–23.05. This embankment was built between 1912 and 1914 as part of the construction of the Hauenstein base tunnel. It is between 6 and 9 metres high. In the 1990s, the internal stability of the dam body was increased by means of injections and dowelling due to deformations. Since then, the dam has also been monitored using technical aids. In recent years, the deformations of the dam body have increased again. In some places, they are up to 10 millimetres per year. The aim of the present remediation project is to reduce the deformations to about 0 to 1 millimetre per year and thus ensure safety even without semi-automatic monitoring.

As part of the preliminary project in 2021, Drees & Sommer Switzerland was commissioned to create the construction phase plan. This involved developing a stable and consistent construction phase plan that would be suitable for both further planning and subsequent construction. The construction phase plan had to be created in accordance with the SBB standards defined in the Construction Phase Planning Manual.