Qualla: Brecon and Merthyr Tydfil Junction Railway

Brecon and Merthyr Tydfil Junction Railway: Introduction

Sat, 23 May 2026 00:00:00 GMT

Photo credit --Immanuel Giel 10:03, 16 August 2007 (UTC), Public domain. By 1913, a railway nobody had really wanted was hauling almost three and a half million tons of coal a year over a 1-in-38 gradient through the Brecon Beacons. The Brecon and Merthyr Tydfil Junction Railway - shortened to B&MR by everyone who actually worked on it - had been authorised in 1859 to connect two towns. Within a decade it had given up on being a passenger line and become something else entirely: a mineral artery, climbing in and out of the high country south of Talyllyn at gradients steep enough to bring tank locomotives close to stalling. The South Wales coalfield was at its peak. The B&MR was always short of money, always too steep for comfort, and survived against the odds until the railways were grouped in 1923 and it disappeared into the Great Western.

Image: --Immanuel Giel 10:03, 16 August 2007 (UTC) | Public domain

Brecon and Merthyr Tydfil Junction Railway: Why Brecon Needed a Railway

Sat, 23 May 2026 00:00:00 GMT

Photo credit Jennifer Luther Thomas, CC BY-SA 2.0. Brecon was a medieval regional centre, set at the confluence of the River Honddu and the River Usk, with the ridge of the Brecon Beacons rising to the south. Getting anywhere had always been difficult. The first turnpike road connected eastward to Abergavenny and south-westward t...

Image: Jennifer Luther Thomas | CC BY-SA 2.0

Brecon and Merthyr Tydfil Junction Railway: Acquiring a Plateway and a Reason to Exist

Sat, 23 May 2026 00:00:00 GMT

Photo credit Roger Cornfoot, CC BY-SA 2.0. The original brief - link Brecon to Merthyr - was hard. The mountains demanded a rope-worked incline at one end and prodigious cuttings at the other. Then the directors made a decision that changed the company's purpose. They bought the Rumney Railway, a horse-drawn plateway runn...

Image: Roger Cornfoot | CC BY-SA 2.0

Brecon and Merthyr Tydfil Junction Railway: Money Trouble From the Start

Sat, 23 May 2026 00:00:00 GMT

Photo credit John Martin, CC BY-SA 2.0. The trains were being worked by contractors - Thomas Savin and John Ward - who paid the proprietors five percent on their capital and kept whatever was left. In 1865 or 1866, depending on which historian you trust, Savin went bankrupt. The B&MR suddenly had no operator, no income...

Image: John Martin | CC BY-SA 2.0

Brecon and Merthyr Tydfil Junction Railway: The Gradients and the Trains That Climbed Them

Sat, 23 May 2026 00:00:00 GMT

Photo credit Ben Brooksbank, CC BY-SA 2.0. What made the B&MR distinctive was its terrain. The line emerging from the south-east portal of the Beacons tunnel descended for seven miles at 1-in-38 - a 2.6 percent gradient - down the side of Glyn Collwyn towards what became, after 1931, Talybont Reservoir. Climbing the other...

Image: Ben Brooksbank | CC BY-SA 2.0

Brecon and Merthyr Tydfil Junction Railway: The Slow Decline and the Cycle Path

Sat, 23 May 2026 00:00:00 GMT

Photo credit John Thorn, CC BY-SA 2.0. When the railways were grouped in 1923, the B&MR vanished into the Great Western Railway. Its trains kept running, but the world it served was already going. The Merthyr and Dowlais ironworks were declining or closing through the interwar years. A 1933 traffic-pooling arrangement...

Image: John Thorn | CC BY-SA 2.0