Hi! I just moved to Rochester recently and had the same question. I went to the card services and called Rochester Public Transit and found that the bus fares are free indefinitely (due to COVID). But once the free fares end they are still free to employees. I also reached out to the transit company to better understand the routes to and from DT and St. Mary's since their website it a little confusing. The route numbers and stops are totally changing this Sunday (8/16) due to the Rebuild Plan. Here is a link to the new routes: https://www.rochestermn.gov/departments/public-transportation/how-to-get-around/bus-schedule-and-system-maps. Also if you call them they are very helpful and can tell you which routes to take! I hope this helps 🙂