via ControlPort, can we build a circuit to a bridge?

[Jon McLachlan]

Referring to the spec 
http://www.torproject.org/svn/trunk/doc/spec/control-spec.txt, (in 3.10) 
it seems like we may have the ability to build/extend circuits through 
specific Tor relays.  The spec seems ambiguous if the defined ServerSpec 
is specifically a Tor relay and/or Tor bridge.  Reading the Tor bridge 
spec 
(http://www.torproject.org/svn/trunk/doc/spec/proposals/125-bridges.txt), 
the bridge seems uniquely disjoint from Tor relays, in that bridges 
publish bridge descriptors to bridge authorities instead of directory 
servers.  So, what I am wondering is, can ServerSpec (as defined in the 
control-spec above) be used to reference a known bridge, in the 
extension of a circuit?

Best Regards,
~Jon