Translation of "Roadway" in Spanish

My father started working in Public Roadway Services.

Mi padre entró a trabajar en Vialidad,

The volume of the roadway is still sustained.

El ancho vial permanece igual.

We wouldn’t want to put a 4 to 3 conversion on a piece of roadway that would then push

No pondríamos una conversión de 4 a 3 carriles en una parte de la carretera que provoque