Bewdley tunnel is 480 yards long and is situated on the Acceptance Lever worked single line section between Kidderminster and Bewdley. Its small bore is attributable to it being relined in 1908.
The track through the tunnel was replaced as part of a major refurbishment during the winter of 2011-12. In order to simplify future maintenance the existing jointed track was replaced by continuously welded rail (CWR), resulting in the absence of the traditional 'clickety-click' from the wheels as the train passes through the tunnel.