The usual deal is to just wait a bit more, until your bridge gets voted into the last consensus. The "running: true/false" field in Onionoo simply indicates whether your bridge/relay descriptor is listed in the last consensus (which is published every hour, and includes a list of relays and bridges which the network authorities agreed on being valid / etc. for client usage.) It usually takes some time (e.g. more than an hour) even after your bridge/relay is successfully running. At least that's my (perhaps oversimplifying) take.
Perhaps you're using it yourself, but one of the ways to probe Onionoo in a user-friendly way is the new Globe tool [1]. It includes bridges as well as relays.
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Kostas.
0x0e5dce45 @ pgp.mit.edu