Feel free to file this as too tangential, as it's bureaucratic and software infrastructure as opposed to steel and concrete infrastructure, but indirectly it has a profound effect on the urban environment:
Massachusetts' vaccine rollout.
In 2020, states like New York built out clunky but mostly usable websites for scheduling vaccine appointments. Millions have used it to receive their first dose and schedule their second. MA lacks any such centralized place to sign up for shots.
Charlie Baker's decision to stick to a very strict phasing has likely also led to MA trailing most other Northeast states.
MA started vaccinating at nursing homes on 12/28. ME, VT, CT, NH, started vaccinating nursing homes the week prior.
In NYC, I've been volunteering at pop up distribution sites that are working well enough that we had to shut down on Thursday because we had administered our current supply and aren't receiving more until tomorrow (i.e. the bottleneck is happening earlier on in the chain, the distribution step has excess capacity). There are about 20 of these sites in NYC that have been open since early Jan. MA's second mass vaccination site, Fenway, isn't scheduled to open until Feb 1. NY's overall vaccination rate is only slightly better than MA's right now, but I think that trend will continue and widen in the near term, as more supply is made available and until MA's vaccine distribution infra catches up.