Assuming tracks 00-07 can be different positioned against 24-31:
North +----------+ 00 ==|..........|== 24 01 ==|..........|== 25 02 ==|..........|== 26 03 ==|]========[|== 27 04 ==|..........|== 28 05 ==|..........|== 29 06 ==|..........|== 30 07 ==|..........|== 31 +----------+ South
Track number 63 will be used for calibration.
If a loco wants to run from track 03 to 27 the bridge must set first to track 03, and after the loco is completely on the bridge track 27 should be set.