This road is open 24 hrs a day! But avoid using this road as an alternative route from mesaieed to salwa road. It is totally dangerous highway. Coz this is the route of the heavy trucks going to MIC from salwa road (vice versa).
Even if you are a very defensive driver, think those truck drivers who drives all day long and very exhausted without 100% concentration on their mind. In short, don't go for this road just to save little time on your travel.