Some bridges get destroyed if you hit them while driving armored vehicles. Especially Bobcat can destroy bridges quite easily. Tried with cars couple of times and was unable to reproduce this.
Bridges affected:
Dirt road bridge, tested with this one: [3480, 13345]
Highway bridges, one in Kavala (tested multiple others, affected as well): [3670, 13300]
Other bridges in Kavala seems to work properly.
Edit: Didn't feel like creating a new ticket because it might be the same bug. I noticed that vehicle lights behave differently when crossing these bridges. The illumination on the bridge had very sharp edges and was bouncing all over the place. {F22227}