I understood that rural air is significantly worse than urban due to all the pesticides.
And that's excluding the light and noise pollution that are inevitable in urban areas. Yeah, living in a rural area is pure hell.
Source, in dutch: https://www.hln.be/milieu/omwonenden-a10-snelweg-leven-79-da...
Or when we build the highway, we don’t raze the homes of the elite/wealthy/well-connected to do it, we do it in “bad neighbourhoods”
Or indirect effects: factories move/build next to the new highway (ease of moving materials+density of employees+ease of commuting because of the highway), contaminating the neighbourhood.