1)   Bridge Construction Set 1.30
Bridge Construction Set is all about building a bridge that doesn't break, although watching your bridge creation break and plunge a train into the watery depths below can be half the fun.
Bridge Construction Set, bcs, Pontifex II, Pontifex, bridge builder, trains, bridges, train simulation, bridge simulation, physics,

 2)   Pontifex 10.19.01
In Pontifex you design and build bridges. Once your bridge design is completed the bridge is tested by train traveling across it.
Pontifex II, Pontifex, bridge builder, trains, bridges, train simulation, bridge simulation, physics, simulation, building bridges,