The condition of a long-lived asset is affected by its durability, the quality of its design and construction, its use, the adequacy of maintenance that has been performed, and many other factors,  accidents (an unforeseen and unplanned or unexpected event or circumstance), catastrophes (a tragic event), disasters (a sudden calamitous event bringing great damage, loss, or destruction), and obsolescence.
Quality of design has the largest impact on the asset's condition out of all the other factors.