Please do not map temporary construction restrictions. OpenStreetMap is for permanent features and road networks. The rule of thumb is that, for any detour/closure less than one year, you can add a note with dates, but please do not change the network or add blocks because it will likely be forgotten when the construction works will be completed. There are other tools you can use to add construction/traffic and other real-time/temporary layers on top of openstreetmap layers.