Algodoo

For the contest. W and S to raise and lower the bridge (slow to start, give it a second). A and D to drive the truck.

The bridge supports about 50 ton with little to no bending, and up to 150-175 ton with bending (in the very centre).

Although it is a heavy bridge in total, the heaviest parts are the ones connected to the ground. The moving parts weigh about 18 ton in total, but including the parts fixated to the ground, the whole bridge is about 90 tons.

Unfortunately it doesn`t roll into a complete octagon, because I finished it and then realised it didn`t roll all the way, and I`m not doing it again