In the kelo case, I dont believe they ever built it. Not as of a few years ago.
They didn't, AND, the pharmaceutical company research facility (Pfizer) that was supposed to be an anchor/draw for the hotel moved to MA. Eminent domain should rarely, if ever, be used, and then only for definitely crucial purposes - not for bike paths, hiking trails, or a road that some developer wants so that his/her development will have better accessibility.
The good news is that the property is now a dump (literally) generating no tax revenue for the city of New London.