IMO here is a classic example of barking up the wrong tree.So ok granted, the cargo bikes that are being used by Ups dhl and the like might be to big, but where no longer living in Trump world we don't have to go from the one extreme to the other, let's say the cargo bike's there are popular for the schoolrun in the Netherlands by some wonder become popular here, away with the Tractors in with the children cargo cycle. These are not so gigantic as these purpose build ups and dhl bikes but still cargo bikes. (see here https://www.babboe.co.uk for some examples) So it still is my 1pound(i raised the stake) that in 2021 the government/council/angry grandma interrupting the live stream should be able to make a cycle bridge that can accomodate all. For the many not the few..
To achieve the uptake of utility cycling in place of motorised vehicle journeys then stop trying to engineer huge environmentally unfriendly and unwelcome infrastructure when the far simpler solution is to keep the pathway traffic on the ground and instead convert the road layout so the pedestrian and cycle users have right of way and can cross without feeling intimidated or at risk. This also discourages vehicular traffic too so is a win-win situation.