I like the idea of making a tunnel for the Runner beans over my path to walk through & started researching on the internet. It appears they are fraught with difficulty as if too narrow you can't get through yourself with the growth intertwining, which is a problem as the barrow will have to go through from time to time - I could go around, well except to pick but that could end up a Dr Who episode with me trapped in there.

If they are too wide the weight bends the canes down so you have to duck & I expect they could split as well.
There were some with that blue pipe hooped over the top, but not sure of that, as that pipe is a bit heavy by itself and will be sitting on top of the pointy end of the canes so I think with a heavy crop as well that would break. The metal structures are cost prohibitive and most are not long enough. Some bloke in the states had some rigid cow wire mesh in a big piece but I think it would be too heavy and I would not be able to bend it & he didn't explain how he anchored it to the ground.
Any ideas? Anyone tried it?