Just drop a M3 Amphibious Bridge Truck off the ramp. Can carry MLC70 tracked or MLC100 wheeled in bridge or linked-ferry mode, at currents up to 2.6m/s without anchor or in bridge mode up to 3.5m/s with anchor.That could be got round to a certain degree with suitable equipment (e.g. floating bridges to link ro-ro ramps to shore), but outside the USN, there's not a lot of it around, AFAIK.
70 vehicles available with the Bundeswehr and Royal Army Germany.
There's also the HPG pontoon assembly bridge. Each assembly links up into a 64m MLC80 bridge, but needs a lot more time than the above method with the M3 (5 hours instead of 20 minutes). One assembly in each Heavy Engineer Battalion in the Bundeswehr.
Alternatively, there are a couple dozen standard US Army Ribbon Bridge systems spread around the Bundeswehr.
Or you could attempt to load directly off from the ramp onto a LCU, though i have my doubts about the safety of that for anyone involved.