Croft Viaduct

Croft Viaduct is a railway bridge carrying the East Coast Main Line between Northallerton and Darlington in Northern England. The viaduct crosses the River Tees, the border between North Yorkshire and County Durham. Although it was an early example of a stone viaduct in the railway system, it is not the first true railway viaduct, however, it was the first railway viaduct in the United Kingdom to have been built with an oblique arch (or skew-arch). It was grade II listed in 1988, and had overhead line equipment installed in the early 1990s.