marshy estuary of the River Quoile, just outside Downpatrick. The original bridge consisted of lattice trusses supported by timber piles driven into the riverbed, and was replaced with a steel girder bridge in 1929. As it was built on the floodplain of the River Quoile, the line towards Downpatrick often suffered from flooding, particularly during the winter months. The railway originally terminated at Downpatrick, but in 1869 a separate company, the Downpatrick, Dundrum and Newcastle Railway, built an extension from Downpatrick to the seaside town of Newcastle. The Newcastle line was operated by the BCDR and purchased by them in 1881. The extension created an inconvenience wherein a train running between Belfast and Newcastle had to stop in Downpatrick and uncouple its locomotive, which moved via a run-round loop to the other end of the train in order to continue its journey. This significantly increased journey times and caused excessive congestion at the Downpatrick terminus. The opportunity arose in 1892 to end this cumbersome practice with the opening of the Downpatrick, Killough and Ardglass Railway and, with it, Downpatrick Loop Platform. The Ardglass line was built and operated by the BCDR, and branched off from their mainline about a kilometre south of Downpatrick station. In conjunction with this, a loop line was constructed to directly link the Newcastle and Belfast lines, with the Loop Platform located at the South Junction. This enabled Newcastle-bound trains from Belfast (and vice versa) to bypass the main Downpatrick station, and instead call at the Loop Platform where passengers intending for Downpatrick or Ardglass could board a local train. Meanwhile, the mainline train could carry on without having to run around. This resulted in an unusual triangular-shaped layout, the trackbed of which forms the basis of most of the DCDR's operational railway line. Decline and closure of the Belfast – Newcastle Line Following the 1945 Ballymacarrett rail crash and the resultant £80,000 (the equivalent of over £3,530,000 in 2020) it had to pay in compensation, the BCDR was financially ruined. This was a deciding factor in the nationalisation of the company, which became part of the Ulster Transport Authority (UTA) in 1948. The UTA's railways were in need of significant investment following years of underfunding during World War II; as a result, Northern Ireland's devolved government established a tribunal to determine the future of its public transport system. In December 1949 the tribunal authorised the