Having a floating structure ~20m from shore, I want to build a retractable bridge from the floating structure to the shore with a span of ~20m. This bridge should handle the weight of a 2-ton vehicle crossing it. It should rely on remote control to deploy it but most importantly of all, it must resist sea corrosion.
Options are open: it may be self levelled in the sense that it does not need supports below it (preferable) but it also may have floatation supports below it to support the weight. IT HAS TO BE DEPLOYABLE and not a permanent structure.
It may use cables, pneumatics, or gears... it does not matter. What matters is the maintenance of it considering the corrosion of the sea environment.
I am looking for tenders in the design of this bridge.