Beautiful photos !
That bridge footing will probably still be standing long after most of our buildings have returned to dust. With Portland Cement we mastered concrete that could set underwater, as the Romans did well over 2100 years ago. But unlike our concrete, the Roman version is able to self-heal microfractures and small cracks due to the way the lime content was added. Especially useful in areas with earthquake activity !
I didn’t know that. I guess they call it the consumer era for a reason…