Editing Box Tunnel (section)

==Electrification==
The tunnel was planned to be electrified by 2017 as part of the [[Great Western Electrification Programme]]. During the summer of 2015, the tunnel was closed for six weeks for preparatory work including lowering the track by roughly {{convert|600|mm|inch}} and replacing {{convert|7|mi|km}} of cabling in advance of the catenary infrastructure being installed.<ref name="BBC News"/><ref>Carr, Colin. [https://www.railengineer.uk/2015/09/30/preparing-the-way-for-bath-electrification/ "Preparing the way for Bath electrification."] {{Webarchive|url=https://web.archive.org/web/20180614044713/https://www.railengineer.uk/2015/09/30/preparing-the-way-for-bath-electrification/ |date=14 June 2018 }} ''railengineer.uk'', 30 September 2015.</ref> However a November 2016 announcement stated that the plan to electrify the mainline from [[Thingley Junction]] (near [[Chippenham]]) to [[Bristol Temple Meads]] was delayed indefinitely.<ref>{{Cite news |date=8 November 2016 |title=Great Western line electrification 'deferred' amid cost overruns |url=https://www.theguardian.com/business/2016/nov/08/great-western-electrification-branch-lines-oxford-bristol#:~:text=Work%20to%20electrify%20key%20branch,trebling%20to%20%C2%A32.8bn. |work=The Guardian}}</ref>