Railways also arrived in Digbeth in the 19th century by the Great Western Railway. The mainline passed through Digbeth via a large railway viaduct built out of Staffordshire blue brick, and into Snow Hill station via the Snow Hill Tunnel. As traffic at Snow Hill increased, Moor Street station was built as another terminus to relieve congestion, with an additional goods shed to serve the nearby markets. The goods shed was eventually demolished, but the station still in use for services to London Marylebone. Near the Bordesley station, this mainline viaduct meets the incomplete Duddeston Viaduct, which passes over the Digbeth Canal but stops abruptly at Montague Street. This was intended to link the Birmingham & Oxford Junction Railway to Curzon Street station, but access was disputed with the London & Birmingham Railway which terminated there. Once new mainlines were built into Snow Hill and New Street, construction on the Duddeston Viaduct stopped and it has remained unused since. Bridges over the roads have been removed. There are plans to turn the upper surface into an "elevated park".