Dictionary of National Biography (1894), vol. 37: Metcalf, John (1717–1810), by Thomas Seccombe · Dictionary of National Biography, 1885–1900
For “Occupation (Road builder)” FROM 1765 TO 1792 of John Metcalf
"He finally relinquished road-making in 1792"; Wikipedia: first contract 1765 (Minskip–Ferrensby), c. 180 miles of turnpike built in Yorkshire, Lancashire, Derbyshire and Cheshire, retired 1792.