Larpool Viaduct, also known as the Esk Valley Viaduct, is a 13-arch brick viaduct built to carry the Scarborough & Whitby Railway over the River Esk, North Yorkshire, England.
The viaduct is a 13-arch structure, long, with the rail level reaching high. The foundations on land were excavated to the level of rock, and formed from slag based cement. The river foundations were excavated in brick lined wells. The river foundation excavations were complicated by large oak trees found embedded in the river that required divers for manual removal. Piers 5,7,8 and 9 had triple foundations, connected above the water level by two semicircular arches. Three of the piers in the river are skewed so as not to deflect the tidal flow (the River Esk is tidal as far as Ruswarp upstream).
The main arches are wide, and high, made of bricks seven deep, . The width between the parapets is on straight sections.
Services on the line ended in March 1965 as a result of the Beeching Report.
The viaduct became grade II listed in 1972. In 2000 much of the former line and the viaduct were opened to the public. By 2006 parts of the brickwork had become unsafe due to spalling, and the parts of the outer layer were replaced. As of 2012 the viaduct is part of the 'Scarborough to Whitby Rail Trail', also promoted as the "Scarborough to Whitby Cinder Track", a cycle route.
The viaduct is mentioned in Bram Stoker's 1897 novel Dracula:
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