The deformation of retained soil is of importance for the design of a deep excavation in soft soil. The influence of bedrock underlying the soils on the behavior of the retaining wall needs proper evaluation. This contribution shows a case study on deep excavation in soft soil overlying bedrock at the South Link Infrastructure Project in Stockholm. The behavior of sheet pile walls at the South Link shows that both lateral displacement and settlement are larger than the magnitude from similar case histories. Exemplified by section 1/840N, the features of lateral displacement increment are analyzed with monitoring and PLAXIS simulating results. The analysis results indicate that the beneficial influence of bedrock may be overshadowed by the low strength of soils in which excavation occurs.