tersburg_Dam" title="Saint Petersburg Dam">Saint Petersburg Dam</a>, started in 1978 and completed in 2011, is expected to protect the city from devastating floods.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span>[</span>4<span>]</span></a></sup> The dam is the last completed part of the <a href="//en.wikipedia.org/wiki/Saint_Petersburg_Ring_Road" title="Saint Petersburg Ring Road">Saint Petersburg Ring Road</a>. Its first use to hold back the incoming Baltic water into Neva bay took plac