That's a great question. I found this plot from Arizona Department of Public Health.'Hospital Bed Usage & Availability' sub-tab 'Number of Intensive Care Unit

That's a great question. I found this plot from Arizona Department of Public Health.'Hospital Bed Usage & Availability' sub-tab 'Number of Intensive Care Unit Available and In-use at Arizona Hospitals.' https://azdhs.gov/preparedness/epidemiology-disease-control/infectious-disease-epidemiology/covid-19/dashboards/index.php https://azdhs.gov/preparedness/epidemiology-disease-control/... Everything is reported in percentages, so I don't know how the absolute number of beds shifted as a result of temporary increases in ICU capacity.