the Quarterbridge road junction, including the building of a new roundabout and the demolition of the Quarterbridge Hotel. In August 2009, for the 2009 Manx Grand Prix a section of grass bank is removed from the southern side of Keppel Gate. This was to provide a run-off area after a practice crash by the Australian TT competitor Cameron Donald and a further more serious incident involving Travelling Marshal John McBride at Keppel Gate during the 2009 Isle of Man TT races. During the winter of 2010, further road construction and repair work was carried out by the Isle of Man Department of Infrastructure Highways Division, and the Isle of Man Water Authority between Cronk Urleigh and the 13th Milestone. This was followed by major road resurfacing work between the 13th Milestone and Westwood Corner near Kirk Michael, Barregarrow Hill, and Sulby Straight from Kella Crossroads to Sulby Bridge during the spring of 2011. The Highways Division modified the road junction at Signpost Corner including improved drainage, elevation changes, and repairs to the road surface in November 2010 and the same major repair process of road resurfacing was repeated for the Quarter Bridge road junction in February 2011. The Department of Infrastructure during the winter of 2011/2012 removed and re-positioned roadside fence-posts from Brandywell to the 32nd Milestone and from Windy Corner to the 33rd Milestone. During the winter of 2012/2013 the stone TT Marshal shelter at Guthrie's Memorial was demolished. The roadway at Hillberry Corner underwent repairs to the carriageway and was resurfaced and re-profiled by the Isle of Man Department of Infrastructure, Highways Division during the Spring of 2014. In April 2015, the Highways Division instigated a programme of landscaping at Keppel Gate including the removal of a small grass bank on the north-eastern side of the corner, road re-profiling and re-surfacing work. Official lap records The lap record for the Senior TT race is 16 minutes and 42.778 seconds at an average speed of set by Peter Hickman during the 2018 Senior TT Race. The race record is also held by Hickman in 1 hour, 43 minutes and 08,065 seconds; an average race speed of achieved during the same 6 lap Senior TT race. The lap record for the Sidecar TT race is 19 minutes and 22.928 seconds at an average speed of set by Ben Birchall and passenger Tom Birchall during the 2016 Sidecar TT Race 1.