The Aberdeen–Inverness line is a railway line in Scotland linking and . It is not electrified. Most of the line is single-track, other than passing places and longer double-track sections between Insch and Kennethmont and Inverurie and Berryden Junction (Aberdeen). History The line was built in three parts: Inverness and Nairn Railway between Inverness and Nairn, which opened on 5 November 1855. Inverness and Aberdeen Junction Railway between Nairn and Keith which opened in 1858. Great North of Scotland Railway between Keith and Aberdeen which opened on 19 September 1854, with the southern portion (between Port Elphinstone and Aberdeen Waterloo) being built over the route of the Aberdeenshire Canal. The first two parts of the line merged to form the Highland Railway. The Highland Railway operated the line from Inverness to Keith with the Great North operating the line from there to Aberdeen. The Highland was grouped with other railways into the London Midland and Scottish Railway and the Great North was grouped into the London and North Eastern Railway by the Railways Act 1921, before eventually becoming part of British Railways in 1948. Since 1948 Many intermediate stations and connecting branch lines were closed at various dates during the 1950s and 1960s to both passenger and goods traffic. The 1963 Reshaping of British Railways report recommended the closure of Inverurie and Insch stations but these remain open. In 1968, the route was singled. Dyce railway station was reopened in 1984. The railway bridge over the A96 road south of Nairn was replaced in 1991. A new steel-span bridge was constructed adjacent to the existing stone arched bridge. The new bridge was opened in July 1991. This eliminated a bottleneck on the A96 where lights allowed only one direction of traffic under the narrow bridge at a time. A new freight interchange known as Raith's Farm was opened in 2009 at Dyce. In 2017, the line through Forres was straightened and a new station built, reinstating the second platform and extending the passing loop there. The platforms at Elgin were extended, the passing loop extended from 650 metres to 1.25 km, and a turnback facility was added. In addition to this, signalling improvements took place which saw control of the line between Inverness and Keith transferred to the Highland signalling centre in Inverness. In 2019, redoubling work between Aberdeen and Inverurie was completed, though a 1.5 km section north of