During the Victorian era, Llangurig nearly had a railway service. The Llangurig branch is noted as being the shortest lived working branch line in the UK, receiving only one train. Wales' rail network was built piecemeal by many small companies, and Parliament mistakenly granted acts for two lines through the same piece of terrain, linking Llanidloes to Aberystwyth: one for the Manchester and Milford Railway; the other for the Mid-Wales Railway. The M&MR intended to connect the two settlements with a route across Wales, to enable the industrialised Northwest to access the deep-water port in Milford Haven, West Wales. The MWR was authorized to build its line by act of parliament in 1859. The M&M was likewise authorized in 1860. The line was to head west from Llanidloes by way of Llangurig to Pant Mawr, through a tunnel, turning southwards for Ysbyty Ystwyth and Tregaron, finally connecting with the Carmarthen & Cardigan Railway at Pencader. After resolving difficulties of accessing Llanidloes through the creation of the jointLlanidloes and Newtown Railway, it would extend of double track southwards to Penpontbren, where the MWR and M&MR would diverge. The M&MR and MWR were to pay 5% per annum on construction costs and maintenance. Also the three companies were to pay equal shares of interest and running costs for the new station at Llanidloes. These charges were eventually to prove crippling for the M&MR. The Llangurig branch was fully built, and a single goods train ran along its length, at which point the L&NR invoiced the M&MR for the cost of the joint station at Llanidloes. The branch service was immediately terminated, being wholly unprofitable without through traffic. The M&MR continued to pay for the cost of the joint station they could not reach. By 1864 the M&MR had changed its plans for crossing the Pumlumon range, and hence stopped all work west of Llangurig. 1866 was a difficult year, including the collapse of the London Bank Overend, Gurney and Company, causing many industrial projects to encounter financial hardship. By 1876 MWR had still failed to build the new route, with an act of parliament permitting abandonment of the scheme. In 1882 the M&MHR started to dismantle the Llangurig branch, lifting of the essentially unused track for maintenance purposes elsewhere. A large part of the route east of Llangurig is marked on current OS maps as 'dismantled railway', much of the course close to the A470 road through Nant Gwynwydd being clearly visible. Some earthworks and tunnel headings survive from the original M&MR scheme west of Llangurig, as can Llangurig station.