With this heavy rain, roads that are open and closed are rapidly changing, as crews work to reopen roads and close new areas reporting problems. You can check for storm-related road closures by using the Montgomery County Department of Transportation’s storm map. Enter an address or intersection to see whether an area has been closed due to floodwaters or downed trees or power lines. If the road is marked with a thick black line, it is closed. A barricade icon indicates that an intersection is closed.