If you go off route due to closure like this are you disqualified from a TD ITT or the group race?
Others will chime in on this, but I don't believe you would be, especially with proof like this that the route is closed. Style points might dictate that you don't take the pavement, but try and stick to the route as close as possible without endangering yourself. Depending on the roads that are difficult but still close to the route. It would depend on the specific closures.