Many currently available methods for strengthening of subsoil require an interruption of railway traffic. Track and sleepers have to be removed ballast, sub-ballast and often the embankment fill have to be excavated in order to perform the strengthening works. Such methods are complicated, time consuming and always very expensive. There is a desire to perform strengthening with a minimal impact on railway traffic without or with only marginal reduction of actual train speeds and axle loads. Practical application of such methods considerably eliminates the costs for the remedial measures and expenses due to traffic interruption. The paper provides overview of those methods that can be utilized for strengthening of subsoil under existing railways with the minimal impact on train operation. The second part of the paper presents the description of a practical case there strengthening of subsoil using inclined limecement
column walls is suggested.