SK 348 575. The Ambergate section of the Manchester Buxton Matlock & Midlands Railway of 1849 has a series of fine masonry and cast iron bridges immediately prior to its junction with the main line at Ambergate itself. (1) The railway viaduct over the River Amber is a Grade II structure built in 1849 by engineer James Allport. It is part of the Manchester, Buxton, Matlock and Midland line, which opened in 1849. It is constructed from rock faced ashlar with tooled ashlar dressings and has five tall segmental arches. (2)