I have changed that bridge out and made it a teleporter already. I can give you stuff easier than I can teach you. Put the script in the spoiler tags into the Greatwood3 tng in place of the broken bridge. Change the red line out with the EntranceConnectedtoUID for the Region you want to go to from the bridge.
The attached file has almost all of the EntranceConnectedtoUIDs.
If you want to learn how to do this on your own check the wiki. It was hard to figure out, but possible.