Carrollton Viaduct
...that Carrollton Viaduct in Baltimore, Maryland is the world's oldest railway bridge still in use, and that its cornerstone was laid on July 4, 1828?
...that <b id="mwBKg"><a href="./Carrollton_Viaduct" id="mwBKk" rel="mw:WikiLink" title="Carrollton Viaduct">Carrollton Viaduct</a></b> in <a class="mw-redirect" href="./Baltimore,_Maryland" id="mwBKo" rel="mw:WikiLink" title="Baltimore, Maryland">Baltimore, Maryland</a> is the world's oldest <a href="./Rail_transport" id="mwBKs" rel="mw:WikiLink" title="Rail transport">railway</a> <a href="./Bridge" id="mwBKw" rel="mw:WikiLink" title="Bridge">bridge</a> still in use, and that its <a class="mw-redirect" href="./Foundation_stone" id="mwBK0" rel="mw:WikiLink" title="Foundation stone">cornerstone</a> was laid on <a href="./July_4" id="mwBK4" rel="mw:WikiLink" title="July 4">July 4</a>, <a href="./1828" id="mwBK8" rel="mw:WikiLink" title="1828">1828</a>?