1. A path, route, or journey that is not accessible or cannot be used at a given time
The main highway is closed due to construction; that route is unavailable.
A rodovia principal está fechada por causa de obras; esse percurso está indisponível.
2. In navigation or transit systems, a course or itinerary that cannot be accessed or is temporarily blocked
The GPS showed that the fastest route was unavailable due to traffic.
O GPS mostrou que o percurso mais rápido estava indisponível devido ao trânsito.