[ByronRACE]

Well, I guess that all boils down to what it is you're wanting to lift.

I'm wanting to lift less than 2000lbs when using a cross bar bridge like that, so I could use something as simple as thick wall 4x2" box tubing welded to some round receiver tubes that slip over the ends of the hydraulic cylinders. I'd have to do the math, but I'd be shocked if that didn't do the trick.

If that's still too heavy, you could construct the bridge out of square trailer hitch receiver slip-tubes such that it's in 2 parts and slips together in the middle and bolts (or pins) together at the ends. That would cut the weight into 4 pieces...and certainly be doable.