According to data from Suffolk County Council, the track here is a Public Bridleway. It should be accessible to pedestrians, horse-riders, and pedal-cyclists.

It would be unlawful to obstruct such users. Any obstructions should be reported to the Council, e.g. via https://www.fixmystreet.com/report/new?longitude=0.717454&latitude=52.044435 using the "Footpaths/ Rights of way" category.