In recent years, problems related to pile foundation construction quality (i.e. inclination and unequal settlement after completion) have frequently been reported. Consequently, we have developed a method for real-time reliability evaluations of pile bearing capacity that take into account construction conditions by using construction information such as extent of penetration, rotational torque, and so on. This study focuses on rotary penetration steel piles, in which the rotation torque and penetration amount during rotation can be observed, to try to develop a realtime reliability updating system. The challenges in this study are to model the relationship with loading tests for pile structures, SPT-N values, rotation torque and extent of penetration per rotation, with consideration for any differences in the amount of data for each index (i.e. partial lack of data). Finally, the effectiveness of the proposed method was demonstrated based on application to a location for which full data was held.