The problem with a burned bridge is . . you can’t get back.
Also the people whose bridge it was are pretty angry about it now.
The problem with bridge analogies is that you can always rebuild a bridge 🤷.
Also, who's bridge do you think it was? This metaphorical bridge surely represents the EU and cooperation between member states of which the UK was once part of. So by definition people in the UK are also angry... and angry to get their bridge back.
TL;DR: Use a better metaphor. No, wait. Rejoin the EU. Yes. That's it.