[2] The approach to the Quarterbridge, a mile from Douglas Terminus, was by an 86 ft lattice girder bridge across the River Glass which replaced an earlier structure in 1902.
[3] The Douglas to Peel railway line crossed the A5 New Castletown Road at the Quarterbridge and followed the River Dhoo and a gradient of 1/105 for a short distance.
The line at this point ran parallel to the A1 Douglas to Peel road which is part of the Snaefell Mountain Course used for the Isle of Man TT and Manx Grand Prix races.
The requests for the Isle of Man Railway Company to construct a small halt at the Quarterbridge to be called Spring Valley, never came to fulfillment.
During the 1980s, the course of the railway line between the Quarterbridge and Braddan Bridge was surfaced with tarmac, which became an access-road used during the Isle of Man TT races.