Once you evaluate the current strength of the bridge you can elect to have the cars drive across and test it out, or go back and try to strengthen it. The preview feature is something I enjoyed using a lot, and is a critical part of the game. Often times I would build the support structure for half of the bridge, only to preview it to see if my blueprint was solid. If the section I had just built crashed into the ravine, I would start over.
Where the game gets interesting is when you make a judgement call on whether or not the bridge will hold up, even if half of it is a lighter shade of red. I found myself tempting fate and sending vehicles across the bridge even when sections were dark red just to see where it would fail. And if if the bridge did fail, I had a good idea of where the failure point was and could attempt to fix it.
On the other hand, part of me was hoping to create a sequence of events that was captured in the Reddit GIF. Just maybe, if the bridge failed in the right place, the resulting explosion would launch the tanker into the air just enough to get it to land on the other side.
In-app purchase are part of nearly every game there days and Bridge Constructor is no excpetion. But I have to tip my hat to the developers for letting players use coins and points earned during gameplay to purchase items, instead of forcing users to pay with real money.
On more than one occasion, for example, I was able to get past a really difficult level by purchasing a blueprint for a bridge with coins I had earned in previous levels (you can buy blueprints for just a section of the bridge, or the entire thing if you'd like). In addition to buying solutions you also can eliminate the budget for a particular level, or all levels if you want. I'd recommend not taking that step, though. Sure, the budget can be annoying and restrictive (just ask any real bridge engineer), but it's part of the game. After all, anyone can build something that's sturdy with unlimited resources.
A couple issues
Still, I didn't like everything about Bridge Constructor. Several different times when I launched the app, a popup ad prevented me from going any further. What's more, instead of being able to close the ad I had to force-close the entire app and relaunch it.
Bridge Constructor is a universal binary, meaning the same version will work on any iOS device, including the iPhone and iPad. That's fine, but my other problem with the game is that you can't sync any game progress between multiple devices. So, if I start a game on my iPad, I can't pick up where I left off on my iPhone.
If there is one thing I can't say enough, it's that I wasn't kidding when I said Bridge Constructor is challenging and unpredictable. Consider that in the week I've spent playing with the app, I've completed about 50 percent of 40 total levels (not including the additional 24 available through in-app purchases). And when they're not merely testing my patience, the current levels are downright aggravating.
I'm not surprised to see the game stay at the top of App Store charts after its recently found success. I hate to even make this comparison, but Bridge Constructor can be as frustrating as Flappy Bird was at times, only not as repetitive. So if you're looking to kill some time, sharpen your problem solving skills and challenge yourself to think outside the box, Bridge Constructor is just the game to do it.