Strange that they didn't just install a huge metal bar in front of the tunnel, like in this video (11 foot 8, the "toughest bridge in the world"): http://www.l

Strange that they didn't just install a huge metal bar in front of the tunnel, like in this video (11 foot 8, the "toughest bridge in the world"): http://www.liveleak.com/view?i=3c0_1351184890 http://www.liveleak.com/view?i=3c0_1351184890