Despite the headline the details seem eminently reasonable. The bridge isn't going anywhere. They just asked the town if they can R&R the middle section of the bridge because the boat can't pass under it. This is a movable railway bridge so the R&R procedure is very, very simple and non-intrusive compared to any sort of bridge with a static span where the middle may be integral to the strength of the rest.

This sort of temporary removal of infrastructure is bog standard in the "hauling absurdly large and heavy things" world. It'll probably be a 9pm-5am closure or something like that and the locals will get to look at a larger than usual boat moored just upstream of the bridge and a large marine crane moored downstream in the days leading up to it.