Web interface for looking up bridge status?
We keep and publish scrubbed bridge descriptors -- hashing the IP address, fingerprint, etc -- as well as bridge pool assignments: https://metrics.torproject.org/data.html#bridgedesc https://metrics.torproject.org/formats.html#bridgepool
The process of looking up whether your bridge is working means you need to do a sha1 of your fingerprint. That means most bridge operators won't do it.
To make it easier, we should offer a web interface where you tell it your fingerprint, and it tells you the corresponding bridge descriptor (including extrainfo details).
(In my ideal world, users could just query Tonga directly, which would mean much more up-to-date answers here. But Tonga quite rightly doesn't answer bridge questions over its unencrypted dirport, and browsers quite rightly don't know how to encapsulate their http queries in the Tor protocol. So I guess that direction is a dead-end.)