My son, Neil, who is a Civil Engineering student at McMaster University, was part of the winning team in the 2010 Troitsky Bridge Building Competition.
In the video below, you will see Neil's shadow on the right and then he will appear in the frame, wearing his League of Extraordinary Gentlemen garb. The digital readout shows the total carrying capacity in kg. The previous record was around 2500 kg. There is a nice writeup on McMaster's site, which looks like it may be replaced eventually, and a scraped one on the Exchange magazine site, which provides some context before watching the video.
The McMaster release included this photo (Neil is on the extreme right).
It made folks who have known Neil a long time think back to his creations using Lego, K'nex and even cardboard and tape as a child.