A poured concrete foundation can last for 80-100 years or more if it is properly constructed and well-maintained. However, a number of factors can affect the lifespan of a concrete foundation, including the quality of the concrete mix and the workmanship, the climate and soil conditions, and the amount of weight the foundation is supporting.
Some of the most common reasons a foundation fails include:
Poor drainage
Frost heave
Tree root invasion
Earthquakes and other seismic activity