I am doing the [Introduction to Camera Tracking][1] tutorial by Blender Guru and at some point he is applying a texture to create cracks in the road (around the hole, see image below). 

[![enter image description here][2]][2]

As you can see there are no cracks visible in this image. Blender Guru is working with Blender Render, I use Cycles. Basically I don't know how to realize this do this in Cycles. Who can help ? Blend file with texture packed attached.

P.S I know there is also an issue with the floor but I think I can only ask one question 

[<img src="http://blend-exchange.giantcowfilms.com/embedImage.png?bid=1726" />](http://blend-exchange.giantcowfilms.com/b/1726/)



  [1]: https://www.youtube.com/watch?v=CVPcT0dJmoY
  [2]: https://i.sstatic.net/4xWJ2.png