page_title: Farnworth railway station
section_title: Farnworth Tunnel
hierarchical_section_title: Farnworth railway station / History / Farnworth Tunnel
caption_attribution_description: English: A HDR image of the tunnels at Farnworth Station, from the platform.
context_page_description: Farnworth railway station serves the Greater Manchester town of Farnworth, in the Metropolitan Borough of Bolton, England. The station has had several names, the present name being adopted on 6 May 1974.
  It lies on the Manchester-Preston Line 8 ¹⁄₂ miles north of Manchester Victoria, though only local services run by Northern Trains call here.
  The station received a minor upgrade in 2009, with the addition of automated electronic information display systems and automated announcements audio system similar to the system at Lostock station. A more substantial rebuild, involving platform realignment, was undertaken in 2015-2016 as part of works to electrify the Manchester-Preston line. The station has a ticket office, which is manned from 06:30 to 13:00 on weekdays only. Outside of these times, tickets must be purchased on the train or prior to travel. Step-free access to both platforms is via ramps from the station entrance.
context_section_description: To the south-east of the station is Farnworth Tunnel, which has two single-track bores, although when built it had one double-track bore. Originally there was intended to be a cutting, but a tunnel was substituted. This was dug from both ends and also from a shaft at the centre; the main difficulty in construction being the nature of the ground, which consisted of wet sand and clay. It is 295 yards (270 m) long, although Network Rail has erected tunnel entrance nameboards that incorrectly read 294 yds.
  The Lancashire and Yorkshire Railway (L&YR) route north from Blackburn to Hellifield was completed on 1 June 1880, and the Midland Railway (MR) proposed to use this route for a through service between Manchester Victoria and Scotland. The MR intended to use Pullman cars, which were larger than the L&YR coaches, and it was found that some of the tunnels on the route were too small and would need to be enlarged. Among these was Farnworth tunnel, which was also in need of extensive repairs; so instead of enlarging it, it was decided to build a second tunnel alongside. The present down (northbound) single-line tunnel was commenced on 26 April 1880 and brought into use on 5 December that year, although Parliamentary approval for its construction had not been obtained: it was applied for in February 1881 and granted retrospectively (as part of the Lancashire and Yorkshire Railway Act 1881, 44 & 45 Vic chapter 135) on 18 July that year. Once it was in use, the two tracks through the original tunnel were replaced by a single track along the centre; the tunnel lining was repaired and thickened, and this tunnel then formed the up (southbound) single-line tunnel.
  As part of the forthcoming electrification scheme, the original tunnel has been enlarged to allow sufficient clearance for the overhead wires and for both lines to be routed through it once again. During this period, the 1880 bore was initially retained to permit a limited diesel service over the route to continue during the upgrade work, and after was then abandoned as clearances within are too restricted to allow safe operation with overhead wires.  This has also required realignment of the lines approaching it and consequent alterations to the platforms that they serve. Work began in May 2015, when the 1838 bore was closed, filled in with cement and re-bored to a larger diameter using the largest tunnel boring machine ever built in Britain. During tunnelling, the workers ran into loose/soft sand, which caused the project to be delayed from October to December and also led to the temporary closure of some lanes on the A666 road above for safety reasons. The TBM finally bored through on 25 October 2015, 21 days after the scheduled completion date. The newly widened tunnel reopened on 14 December 2015, after a scheduled engineering possession on the preceding weekend to connect and test the track & signalling equipment. The first train through was the 05:30 on 15 December from Horwich Parkway station, and the first passenger to use it was former councillor Andrew Morley. At the end of January 2016, the tunnel was once again closed to enable replacement of the temporary tracks and their replacement with tracks suitable for 100 mph running. Overhead wiring was later installed through the tunnel and electric trains were introduced along the route from Monday 11 February 2019, initially utilising Class 319 electric multiple units.
caption: The north-west ends of Farnworth tunnel, prior to the 2015 reconstruction. Original tunnel (re-bored in 2015) on left; additional smaller bore of 1880 on right.
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