A fact from Strépy-Thieu boat lift appeared on Wikipedia's Main Page in the Did you know column on 9 May 2006. The text of the entry was as follows:
Did you know... that the Strépy-Thieu boat lift in Belgium is the tallest boat lift in the world at 73 metres high and has a structural mass of 200,000 tonnes?
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According to my reference (French-speaking magazine "Liège Eco"), quoting J.Dehalu from Sofico (the company that finished the boat lift), the global cost was €160 million, with about 2 million from european fund (so absolutely not €625 million). Has smbd some reference about the other estimation ??