How long do aluminum ramps last?

I'm curious to know, when it comes to aluminum ramps, what kind of lifespan can one expect from them? Are they built to withstand heavy use over an extended period of time, or do they tend to degrade or wear down more quickly? Understanding the durability and longevity of aluminum ramps is important for those who need them for accessibility purposes or for other applications. So, can you shed some light on this question and provide some insight into how long aluminum ramps typically last?