Level 4-1

I built a bank. But can't enough stone to build the roads to let the carts get through. How do I go from here?
Thank you

You can demolish segments of road you do not need. Each segment will give you 10 money and 20 stone. These include:

One segment just to the lower left of HQ

Two segments on the upper right

One segment just to the right of the Exit

Two segments just below the Mine

And once you repair the two segments just to the right of HQ, there are six segments near the Entrance you do not need