Damage and condition identification of existing structures using non-destructive tests is a common challenge that has been worked on for a long time. In this book, two different methods were developed to find existing force on cables as well as determine bending characteristics (EI coefficients) of beam like structures (such as bridges). With the help of the proposed algorithm, the stiffness parameters of bridges can be assessed and the location of any damage that is in the magnitude which can affect displacement behavior of system can be located. The developed methods are demonstrated using...