How to create surface or solid from contour lines?

[mihailklenov]

Hello, there!

For several days now I've been trying to lay a mesh on top of some contour lines.

I've also tried the loft command, but with little success.

I've tried several terrain plugins, but they all seem to misfunction because I have overlapping contours.

Here is the dwg to get idea what I'm trying to make.

I'll be very grateful to all kind of suggestions on how I can do it. (including recomendations for plugins, other software or whatever else)

Thank you in advance!

contours.dwg