A fact from Locks on the Canal du Midi appeared on Wikipedia's Main Page in the Did you know column on 3 November 2008, and was viewed approximately 2,619 times (disclaimer) (check views). The text of the entry was as follows:
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I agree that Ouvrages du Libron is a fascinating feature on the canal but, you guessed right, it's not a lock - even its own article says so - & doesn't have a lock-number. However all is not lost - I have for some time been meaning to create Structures on the Canal du Midi to complement Locks on the Canal du Midi. It would follow the same basic tabular structure and would list all the other wonderful feats of engineering on the waterway - aqueducts, feeders, significant buildings - in which the Libron "pontoon aqueduct" would naturally feature. I'm sure I started a draft once but I can't seem to find it. Perhaps you'd like to give it a bash once you're done with your sterling work on Ouvrages du Libron? I'm going to leave a note over there too as I have access to resources that will help you.