Ok, what type of “bridge” do you have in mind?
I'm not saying there is any easy solution to the cultural divides that have grown, it might have sounded that way by using a simple metaphor.
In my experience, when tempers are up bridges can be as mundane as discussing hobbies like coin collecting or raising chickens. Share passions like music and pets. Bridges form when we talk about childhood experiences on the farm or fishing/hunting etc. Even if the other person has not had the same experience, they are learning about you and filling out the image they had of you and you of them. The first step has to be a willingness to have a nonconfrontational exchange and try to see the person not a label. Once you know the other person as a human, it becomes harder to assume the worst about them or assume malicious intent.
1. Most folks are decent, 2. All of us can be mistaken, 3. everyone has something interesting about them
Remembering those 3 things is how we build bridges.