Sketchup Field Cad

I use google sketchup to make 3D CAD models, and am struggling to get the Field Step file imported into sketchup. I was able to import it, but the file is so large and sketchup cannot handle it. Last year there was a CAD model on the Sketchup 3D warehouse for the skyrise field posted by a user, but i cannot find one for this years field.

Does anyone have the sketchup field CAD for this year, and if not does anybody know how to compress a step file down to a lower quality file? Any suggestions?