Beginning on August 11 through August 18, above average and extreme high tides will affect vehicle access to some extent each day at the Crossover. Each morning, the Natural Resources Officer will assess tide height, weather conditions and beach topography to determine the timing and extent of tide closures. Vehicles may need to leave some or all of the areas over the Crossover. Typically, tide closures last about 1 ½ hours before and after high tide, so remember to check the tides before heading out to the beach. The 2025 NOAA tide calendar (PDF) for Plymouth is available to download or print.