A Swing Bridge instead of a Duck Under

[ngauger]

Well - you're finished!!

Close & lock the bridge. Lay your track and where the track crosses the "cut you made" take extra nails & fasten every tie on both sides of the cut.. 4 or 6 on each side of the cut... Think about power supply here - attach a wire to each rail here - the wire should be long enough to go to the hinge end of the layout plus 1 foot.

Fasten nails at the other end, same thing 4 or 6 inches on either side of the end of the 1 X 6 - Where the bridge meets the layout.

Then take a hack saw and sloooooooooooLY evenly, carefully.... cut through the rails & the ties & the roadbed.. the same exact angle and right above your previous cut.
Finished cut on tracks:
   
This pic also shows the wires.
   

Then cut the other end - same thing - along the break from bridge to layout.

When you're done here - Unlock & open the bridge SLOWLY!!!!! Look at the ends of the rails making sure they don't bind!!! If they do - you'll have to sand them down a tiny bit (Dremel tool)

If they don't bind - you're done!!! Close that stinker!! Run a car or 2 over the bridge just to make sure those rails are perfect.