Due to the extreme temperature changes recently the freeze/thaw is in effect at the Bridge and the Ceiling is once again falling. Be careful if you go there and avoid parking in the lot under there if you value your car.
It would be safer to just not go there for awhile until the weather gets better.
Why may concrete deteriorate from freeze thaw actions?
Deterioration of concrete from freeze thaw actions may occur when the concrete is critically saturated, which is when approximately 91% of its pores are filled with water. When water freezes to ice it occupies 9% more volume than that of water. If there is no space for this volume expansion in a porous, water containing material like concrete, freezing may cause distress in the concrete. Distress to critically saturated concrete from freezing and thawing will commence with the first freeze-thaw cycle and will continue throughout successive winter seasons resulting in repeated loss of concrete surface.