STATEN ISLAND, N.Y. — Runners are creatures of habit. I’ve jogged more or less the same route at the Franklin D. Roosevelt Boardwalk for the last 25 years. Two miles from South Beach to Miller Field in New Dorp and then two miles back. Three to four times a week. Bundled up in the winter, and at dawn in the summer before it gets too hot. I know the boardwalk’s condition could ebb and flow over the seasons, particularly after harsh winters. But around this time last year, I noticed something different.