This is Rail crossing Brantham High Bridge. Suffolk CC has temporarily closed after Network Rail said it was unsafe. Closed in 2016 and remains "temporarily" closed today. Network Rails application to permanently close rejected at Public Enquiry in November 2020 as no suitable alternative could be agreed upon so remains a PROW closed by TRO on public safety grounds. See https://www.gov.uk/government/publications/suffolk-level-crossing-reduction-transport-and-works-act-order