Bridge Construction Set... Building a bridge that doesn't break is what its all about, although watching your bridge creation break and plunge a train into the watery depths below can be half the fun.
The robust physics deployed in the Bridge Construction Set let you build a wide variety of bridges that can span the river. The 3D graphics allow you to view your bridge from any angle including a first person train view - its like being strapped to the front of the train when your bridge is first tested (if this happened in real life I think we might have.