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Railway line in Devon, England

The Dartmoor line is a railway line in Devon, England. From Crediton, the line runs alongside the Tarka Line to the site of the former Coleford Junction where it diverges west to Okehampton. Previously a heritage line, it is owned by Network Rail. The route was originally part of the London and South Western Railway's route from Exeter to Plymouth, which was opened between 1865 and 1879. In 1968, British Rail closed the line beyond Meldon (two miles beyond Okehampton) as part of the Beeching cuts. The Exeter to Okehampton passenger service was withdrawn by British Rail in 1972. The line itself remained open for freight services from the railway ballast quarry at Meldon. From 1997 to 2019, the line was operated as a heritage railway by the Dartmoor Railway community interest company. During this time, Great Western Railway ran a public service between Exeter and Okehampton on summer Sundays. Meldon quarry was mothballed in 2011, ceasing the use of the line for freight. In July 2021, as part of the government's Restoring Your Railway programme, the line was transferred to Network Rail ownership, and regular national rail passenger services began in November of the same year.

The Okehampton Railway, an independent company supported by the London and South Western Railway, was authorised on 17 July 1862 to build a line on the northern margins of Dartmoor from Coleford Junction (north west of Crediton) to Okehampton. Before the line was built it had been leased to the LSWR and an extension authorised to Lidford. In 1864 it was renamed as the Devon and Cornwall Railway (which was absorbed into the LSWR in 1872, before the new line opened) and construction finally started. It opened slowly in sections: from Coleford Junction to North Tawton on 1 November 1865; from there to Okehampton Road (later renamed Sampford Courtenay) on 8 January 1867; to Okehampton itself on 3 October 1871; and finally to Lydford on 12 October 1874. This allowed trains to run a through service to
The constructors of the line adopted a policy of navigating around natural obstacles, rather than going over or through them as earlier builders had done. The section from Coleford Junction through to North Tawton is simple and contains a 4 mile (6 km) straight section, but the line soon begins to curve as it climbs the edge at Dartmoor, at a 1 in 77 gradient. Okehampton station is located on the edge of the moor, 200 feet (61 m) above the town. The high point of the line is about two miles further, reaching 950 feet (290 m) near Meldon Viaduct. The LSWR became a part of the new, larger Southern Railway at the Grouping in 1923. This in turn became the Southern Region of British Railways on nationalisation in 1948.

At the peak of services through Okehampton in the 1950s, there were twelve or more daily trains in each direction; on summer Saturdays, this could increase with duplicate Atlantic Coast Express services. In the early 1960s, a car transporter train ran between Surbiton and Okehampton on summer Saturdays, bringing holidaymakers and their cars from the London area. Trains between Exeter and Plymouth via Okehampton were withdrawn from 6 May 1968, leaving a shuttle service to run between Exeter and Okehampton. The 20 mile (32 km) section between Meldon Quarry and Bere Alston was lifted, and between Meldon and Okehampton the line was only retained for freight trains. Okehampton to Exeter passenger services were withdrawn on 5 June 1972. Between 1972 and 1997, the line was used for railway ballast traffic from Meldon Quarry and occasional freight traffic to the remaining goods yard at Okehampton before its closure. Though the closure of the route was in part to save on the maintenance expenditure of Meldon Viaduct, the structure remained in use as a headshunt for the quarry, given a new layout in 1979 for increased traffic. Occasional charter and special trains were operated to Okehampton and Meldon Quarry during the passenger closure period. Works to refurbish Okehampton station included renovating the station building, raising the platform, restoring the awning, and converting the goods shed into a youth hostel. Part of the building, which saw a grand reopening on 24 May 1997, Heritage services ran between Okehampton and Meldon Viaduct, extended to Sampford Courtenay, Bow or the Dartmoor Railway–Network Rail boundary on special event days. The former stations at North Tawton and Bow remain closed to passengers: both are privately owned and have no public access. Themed trains were introduced for special occasions such as Christmas, with names like The Polar Express and The Train to Christmas Town. Rolling stock based at Okehampton station was moved to Meldon Quarry, with most offered for resale.

After the heritage Dartmoor Railway opened in 1997, First Great Western operated a summer Sunday service of four return trips direct from Exeter between May and September, sponsored by Devon County Council. These trains connected with bus services and heritage railway services at Okehampton, Tarka Line rail services at Crediton and other national rail services at Exeter. Devon and Cornwall Railways (a subsidiary of British American Railway Services) announced its intention to operate through services from Okehampton to Exeter in 2010, having made a track access application to Network Rail on 18 March 2010 to operate four return services each weekday between Okehampton and St James Park and a further two (plus one on Sundays) as far as Exeter St Davids. The service would have run under an open access licence.

On 19 March 2021, it was announced that the Dartmoor Line would reopen to regular, year round services by the end of the year as the first project delivered as part of the government's "Restoring Your Railway" programme. The total cost to reinstate the line was £40.5 million. In July 2021, Network Rail took over formal ownership of the line from Aggregate Industries, a successor company to Camas, which had been leasing it to the Dartmoor Railway since 1994. It also acquired the northern part of Okehampton station from Devon County Council for £1, leaving the southern side with the council. with Great Western Railway running eight trains a day (one every two hours) to , with a journey time of around 40 minutes. On weekdays, five trains, including peak time commuter services, continue to The frequency has increased to hourly from May 2022, with more trains serving Exeter Central.