This how I did my bridge.
Step 1 Location selection.
Step 2 The bridge, made of Oak and Adler wood with Redwood trim.
Step 3 Wiring, I used Split Jaw overjointer clamps on the stationary track and half sections of rail joiners. then raised the ends about 1/16th inch. The rail on the bridge flots on the jointers, both ends of the are wired and Switch installed as a seperate block when in the off position that section is dead.
Left side
Right side
O&A Bridge installed
So far I have not had any problems with setup.
Dave