The stiffness and mass matrix of the structure and table of incidence- is it possible?

Hello! In my research I deal with the issue of human structure interaction (HSI). To develop the topic further, I need to obtain the stiffness matrix of the structure footbridge modeled in Teddy with beams and quads - where I have specific node numbers assigned. I need it for further calculations in Fortran. Is this possible in some way - I haven’t been able to find it by myself yet. Best regards