Instructions
Enter Forge mode and press "up" to go into the editor mode.
Press the "x" button to bring up your list of materials. Locate and select "fence box" and spawn one after another in front of the last until you have the desired length of your bridge.
Select "bottom receivers" from the list of materials and set them at the bridge's base on both sides of each fence box used.
Pick "dumpsters" from the list of materials and place them on top of the receivers.
Space a few sets of teleporters apart from one another on top of the fence box.
Delete the fence boxes. Place a weapon holder with a gravity lift behind the desired point of where your bridge will be located.
Place two dumpsters in front of the gravity lift and set a fusion coil behind the dumpsters.
Blow up the fusion coil to activate the drawbridge.