Iewie

Hi, title says most of it Build near an highway, the walls where no problem. After finishing the house, i wanted to add flooring. But it says [11:34:32] You are not allowed to add ground flooring to a highway. Heres a screenshot: https://picload.org/view/dopdrcol/protection.png.html Is it possible to build the flooring by any means? Or to prevent building in the first place? Edit; found an typo... PS.: English aint my main languange, so please dont blame me if there are more