Do you have the x,y,z points and bend radii information? If so, there are some methods using that information. If you are just trying to approximate that shape, you could draw the center line as a path to sweep along.
I agree with Kevin. You will probably need the virtual intersection points.
Your tooling guy will definetly need the points to build the gage tooling anyway. I remember back in the days making go/ no-go gages for lock rods for an automotive supplier. Those were the good ole days!
This is what 3D sketch is made for, isn't it? Or you could just make two 2D sketches, with the last radius and straight in the last sketch.
Personally I'd use a 3D sketch. And just sketch half of it and mirror.
If all the bends are the same radius then frames is an option
If some are different use XPressRoute.