Grasshopper is an interesting tool to use. It allows to program graphically and in quite readable manner. For prototype, we re-created the Sázava footbridge parametrically in Grasshopper.
OpenAPI in SCIA Engineer is a set of libraries and examples in C# that was used to create models of SuDoVo bridges, with complex shape and combination of beam and slab members.
Based on the Table Input and VBA macros in Excel we developed a proof of concept, which reads DXF (DWG) drawings. In this case the DXF contains multiple storeys drawn separately in the 2D environment.
Table Input in SCIA Engineer is a tool that allows modelling parametrically in Excel and then import such structure in the SCIA Engineer to finalize and analyze the model.