Since it opened in 2000, the Oresund bridge between Sweden and Denmark has been a towering symbol of European integration and hassle-free travel across borders that people didn't even notice were there.<br />On Monday new travel restrictions imposed by Sweden to stem a record flow of migrants are transforming the bridge into a striking example of how national boundaries are re-emerging.<br />The move is meant to stop undocumented migrants from reaching Sweden, which abruptly reversed its open-door policy after receiving more than 160,000 asylum-seekers last year, mainly from Syria, Iraq and Afghanistan.<br />Citing exceptional national circumstances related to security, terrorism and public order, several European countries have suspended EU rules that required them to keep their borders open to each other.
