OK, this is what I came up with:
Basically, the bridge extends for 8 seconds and then automatically retracts. I decided to use your suggestion, Ako_the_builder, for an elevator in my base (minus the auto retraction) and TangentialThreat's suggestion for the bridge. I hooked up to that a Toggle Latch wired to an 8 second Timer with repeaters to stop the flow for an automatic bridge using the Camo Gate.
![th6.png](/proxy.php?image=https%3A%2F%2Fimageshack.com%2Fscaled%2Flarge%2F441%2Fth6.png&hash=f1832d0fecdba2ff39c96420d42bf2d1)
Basically, the bridge extends for 8 seconds and then automatically retracts. I decided to use your suggestion, Ako_the_builder, for an elevator in my base (minus the auto retraction) and TangentialThreat's suggestion for the bridge. I hooked up to that a Toggle Latch wired to an 8 second Timer with repeaters to stop the flow for an automatic bridge using the Camo Gate.