This is the 12855th most frequent Portuguese word.
viária
"Viária" means "related to roads or transportation."
Here, 'viária' is used as an adjective to describe the type of infrastructure, specifically related to roads or transportation.
A infraestrutura viária da cidade foi melhorada recentemente.
The road infrastructure of the city has been improved recently.
In this sentence, 'viários' is the plural, masculine form and describes projects related to roadways or transportation.
Devemos estudar o impacto ambiental dos projetos viários.
We must study the environmental impact of road projects.
'Viária' in this context is used as part of a compound noun to describe a company operating with road transportation.