G. Ross wrote, on Sun, 28 Sep 2014 13:39:26 -0400:

I agree with the turnbuckle, or some way to adjust the tension in case
the bridge wants to tilt to one side.

We plan on balancing the load.

Maybe that won't work - maybe it will.

If we need to, the turnbuckle can be added (somehow) as a rube goldberg;
but at the moment, the load is supposed to be balanced when we build the
bridge hanging from the cables.