The line runs along the coast from Tidmouth to Arlesburgh West, where it connects with the Arlesdale Railway. It is used for transporting ballast, and is also very popular with tourists. Freight services are mainly handled by Donald and Douglas, who are also based on the branch line. When the line was first opened in the 1920s it connected with the Mid Sodor Railway and there was an intention to build further up the Sudrian western coast to Harwick but this extension was never built. When the Mid Sodor closed in the late 1940s the Arlesburgh branch became used only very rarely.