Use of this footbridge is fixed in the coming update to East Coastway. The reason it doesn't currently have a collision, while a seemingly irrelevant bin does is because of the following: When the East Coastway route was built, the level crossing gates were permanently down, so you had no way of accessing the bridge and so there was no need for it to be functional. Now that the route has been updated with working crossings and the gates can be open, you are able to access the bridge and the fact it cannot be used has been highlighted in this video. The reason the bin does have collision is that it is a very commonly used clutter item that appears all over TSW2, it is small and low cost so is given a collision by default.
ah thank you! whilst the video partly comedic I appreciate that.. are they going to extend the line down to Ore?