During periods of moderate to warm weather, new concrete could be opened for pedestrian traffic in twelve to twenty-four hours, or when the surface becomes scuff resistant. A general guideline is that new concrete should not be opened for vehicular traffic for a minimum of seven days. This seven-day period can be significantly reduced by using a faster setting, stronger concrete mix. Please note that concrete gains strength more slowly in colder weather so more time may be needed before putting your new concrete into use.