Is there any way to define symmetrical of a superelevation that defined with a vertical target?

I have a small road project. It has a profile including a superelevation definitions.

The problem is the intersection region with another road. Because left side is targetted to a main road's edge. So the left side has a slope value.

I need to define symmetric slope (negative signed) to the rigth side of my assembly.

Is this possible?

For instance:

at a 0+100 station if left lane slope is +1.23%, right lane slope must be -1.23%.

at a 0+110 station if left lane slope is +1.17%, right lane slope must be -1.17%.

at a 0+120 station if left lane slope is +1.10%, right lane slope must be -1.10%.

etc..