Poya Bridge
... that Switzerland's Poya Bridge was constructed together with an adjacent tunnel containing an underground roundabout?
... that Switzerland's <b id="mwCIc"><a href="./Poya_Bridge" id="mwCIg" rel="mw:WikiLink" title="Poya Bridge">Poya Bridge</a></b> was constructed together with an adjacent tunnel containing an underground <a href="./Roundabout" id="mwCIk" rel="mw:WikiLink" title="Roundabout">roundabout</a>?