Yes sure probably you wouldn't find these things, but you can get a new phone and a new key for the car, it's a bridge, there might be other cars coming by, taking you to the next village to get help or whatever. It's definitely not a reason to jump, at least not for me. I don't know your reasons why you're planning CTB but those are the reasons why you drove to the bridge, and for those reasons you have to be in total desperation, things that cannot and will never change, but not a lost key or phone. Just my opinion.