They closed it because it's very small, very old and in need of fixing and they're building a HEB Plus! (will be the largest HEB Plus! until the one on Evans is built) 1.7 miles from said store. No need to keep it open when it's as old and as small as it is.
I should also add that HEB is going to offer people who used that HEB free bus rides to the new HEB Plus!
I want a HEB HQ by River North with a store at street level
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"The United States is in no way founded upon the Christian religion." -- George Washington & John Adams in a diplomatic message to Malta
River North needs at least one decent grocery store that isn't a convenience store. The benefits of living downtown would be diluted if you had to hop in your car and drive up broadway to central market or wherever.