Yes this came a shock to us when we heard. We were under the impression until this week (week of 12/17) that the trail connection would be preserved during construction or a detour would be provided. We got neither. Testimony was given to the Planning Commission back in May or June to plead our case. The architect felt it was entirely feasible to preserve this connection or provide a reasonable detour.
My advice is to call 311 and complain. You can also write director Costa with DPW – email@example.com and kindly state your case that this connection is part of the transportation system, and if it is shut down a safe alternative must be provided.
We’re going to be working on this so stay tuned. Hopefully we can address this soon.