|This article is about the bridge spanning the single-track tunnel. You may be looking for the bridge over the double-track tunnel.|
Bridge over Single-Track Tunnel Runby is a railway bridge crossing over a single-track tunnel underneath. It first appeared in the opening sequence for Series 8 and was recreated in CGI for the thirteenth series. Its exact location is unknown. It is located near a bridge and a junction leading to Henry's Forest is nearby.
- The map of Sodor which appears at the start of the intro indicates that the tunnel is located on the Peel Godred Branch Line and passes under the Culdee Fell Railway, however this is not possible as Gordon and James are seen crossing the bridge on standard gauge tracks.