Convert from Civil 3D to OpenRoads

What is the best way to convert a 3D survey generated in Civil 3D to Openroads Designer? 

I'm starting a project and my surveyor only works with Civil 3D. However, at my company we only have OpenRoads. 

is there a way/format that I can request from my surveyor that will bring all the data, terrain, levels, and feature definitions from one program to the other one?

thank you in advance!!