Hello Kevin, and welcome to the Forums!
You are probably looking for AutoCAD Map 3D 2016.
Here is a link to the website where you can compare the features of several different AutoCAD releases:
http://www.autodesk.com/products/autocad-map-3d/compare/compare-products
That should help you get started.
Please feel free to post back with any further questions and I will try to steer you toward the correct resources so you can make an informed decision.
Steve Tamplen
Technical Support Specialist