Ask HN: Why is there no 'road closed' option?

Hi, long time reader lurker etc

I've often wondered about this and can't figure it out. Why don't Google Maps and the likes have a way to say: that road is closed! Often it'll keep sending you back to the same road no matter how far away you drive (even in the opposite direction) , because it's much closer than any other way.

But I want to tell it that the bridge is jammed and driving 25 minutes off my path, is better than waiting 2 hours for the bridge to work again. In this example I know that there's another bridge about 7 miles away "in the wrong direction". But I need to cross and this current bridge is not an option.

Why don't they have a button to click, "this road is closed"