That sucks, about having to give up your house for a highway. Eminent domain, everybody's nightmare. Here in my area it's humongous power lines.

I wouldn't worry about the bumpy surface as long as you don't have sharp rocks or roots poking through. Pollen and other debris tends to collect in the dips but you can brush/swish/vacuum that out.

I'd patch the liner and make do for this season.