Boston knows how to beautify a streetscape! I would advise HRM to do more research when doing a costly streetscape makeover.
I think the planters should be rebuilt.
Ref Google maps - 843 Boylston St. Boston, MA
https://www.google.com/maps/@42.3486024,...2iHIMcMBVoHi_w6cIQ7Rg!2e0!7i16384!8i8192