This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Eco ...Brick Bridge... .. SUPER LOW POLY...Dummy"... Great for Road or Rail... Size of model... less than 280 kbs.. ...Other Track items will follow....