These steps are anecdotally known as "the Spanish Steps". There are 80 of them. This time the crumbling step is located near the bottom portion. I reported another crumbling portion a couple of years ago and it was patched. The patch did not look good but it is still holding. I would think they may be the responsibility of the owners buildings which abut them (I believe both buildings are condos). Whomever has the responsibility should repair them - they are extremely steep and uneven where they are NOT crumbling. Please fix. This is a severe safety hazard to people who live in the buildings and MUST use the steps for entrance and egress to their dwellings, as well as to pedestrians such as me who use them regularly.