[tor-relays] How can I tell if my bridge is working?

New operator of a Tor bridge here. How can I tell that it is being used?

With a regular relay I can look up the stats on TorStatus, or I can see that there are n current connections. But a bridge won't be published, and the lower volume of traffic means that there may not be many active connections at any given time.

So how do I know if it is working? I mean beyond the absence of any errors logged?

Thanks.