Any GOOD games on App Store similar to X Construction (Android)

Was playing on my friend's Android phone and he has this game called X Construction (a bridge building game, where you have to build a strong enough bridge for a train to cross) and it was really fun! It seems like there is no version for the App Store, was wondering if there were any good similar games?
Heres a video of X Construct

YouTube: video
Thanks

Hmm. Bridge odyssey is somewhat similar to this game

World of Goo will obviously be the best 'bridge building' type puzzler on iOS for sure but thats iPad only (for now atleast). You can take a look at Tiki Towers, Tiki Towers 2, Moonlights if those interest you.