[Peck]

What is best to manipulate the bridge depends on what you have. Making a wedge that would work well requires a lot of things like:

space for the mechanism (wedge is often bigger then a pusher)

To be reliable, you have to have 2 wedges applying even force to both sides

it has to be joined together at farthest extent at all times (per the rules)

you have to be able to lower the entire system efficiently

greater attention to detail (a wedge is usually an all or nothing and if you get something wrong, you have to re-engineer the whole thing while with something pushing it down, if you don't go far enough, you cut a bigger whole, attach something to the end, or make a brace)

And the wedge design usually has more fail points though this depends on how u build it.

now, if u built a big wedge as part of your frame, that is a different story but right now is likely a little late to implement that.