 Holt died in 1740 and did not live to see the project completed, but an inspection was made by the commissioners on 12 June 1742, eleven years to the day since Leigh took over, The navigation was declared to be complete.An estimated £7,000 had been spent on this second phase of work, and another £1,000 on a fleet of boats.Canalisation of the river involved the construction of a number of locks, with a basin at Miry Lane End, in Wigan, which was connected to the river by a short artificial channel.