This is a real factory which was created with great precision. Simple topology. The real size. The materials are the same for all elements - you can quickly repaint all the elements.
Еach item is one mesh. Logical structured object names.
Trestles and roads are made by segments - it is easy to make any shape of any length. Textures, studio included.
Originally modeled in 3ds Max 2014 and rendered with V-Ray. Also check out my other models, just click on my user name to see complete gallery.