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“Lift & Shift” bridge
More information needed, than is provided, I’m afraid.
Can one get a bicycle across one, or do you have to either carry one up all those steps?
If so, then closing a level-crossing & replacing with one of these is not an answer.
I also note that they are, apparently a lot less massive & don’t need concrete foundations … which means, perhaps that they might blw away in a strong gale?
Problem with using a flow bridge to replace a level crossing is you limit the use of the crossing to able bodied pedestrians not carrying significant goods. They are also not ideal for cyclists (carrying a cycle over a bridge is slow and a bit laborious.
Less able bodied, and those pulling goods on a handcart can use a level crossing. They are convenient for cyclists.
Now, if the design could include some lifts (“a lift in a box”) needing only minimal work to install (concrete pad and power) then you would truly be inclusive. It should be possible to meet the goals of rapid installation with no line closure with lifts, just needs a clever design and packaging (self erecting lift shafts, similar to how tower cranes can jack themselves up).
Looking at the Ordnance Survey for the location quoted, the bridge seems to replace a foot crossing (so a completely unguarded crossing) on a public footpath between fields.
So, no cyclists will be using it as they have no lawful way to reach it.
The concept seems to consider its use with ramps.
https://cdn.knightarchitects.co.uk/uploads/_projectListingImageB/System-01.png?v=1641995354
However, it does so by moving the ramps in question “outside” of what the design covers. Also, unless I’m missing something, the curved section still has steps? The diagram titled “lifts is even more confusing as the cylindrical lift pictured don’t connect/have a landing with the bridge shown.
Source: https://www.knightarchitects.co.uk/bridges/nr-frp-bridge