At Burnley, rather than using two sets of locks to cross the shallow Calder valley, Whitworth designed the Burnley Embankment, a long and up to high earthwork. It would also require another tunnel nearby at Gannow and a sizeable cutting to allow the canal to traverse the hillside between the two. It took 5 years to complete this work, with the embankment alone costing £22,000 (about £1.55 million in 2014). Whitworth died aged 64, on 30 March 1799 and Samuel Fletcher, previously the inspector of works took over as engineer. Once the Burnley work was completed, the canal opened to Enfield near Accrington in 1801. It would be another 9 years until it reached Blackburn only 4 miles away. Following the French Revolution, Britain had been at war with France from 1793 to 1802. The peace proved temporary, with the Napoleonic Wars beginning the following year. High taxes and interest rates during this period made it difficult for the company to borrow money, and the pace of construction inevitably slowed.