This old seawall was part of the old bridge across Tampa Bay. It was hit by a ship and collapsed in 1980. The new bridge starts here as well but is virtually indestructible.
Here is a link to the story with pictures of the event from forty years ago. https://www.tampabay.com/photos/2018/05/09/the-sunshine-skyway-bridge-plunged-into-tampa-bay-38-years-ago/). These days this sea wall and the remnants of the old bridge are used for recreation and fishing.
I took this photo about three years ago. However, lately, there is an on-going project to re-enforce the seawall so that it doesn't erode. Because I drive by it several times a week, I was getting tired of seeing the construction equipment. But upon reflection, and through a longer lens of history, it's probably good that they take all the time they need to get it right.