'Iron Trunk' aqueduct on the Grand Union Canal crossing the Great Ouse at Cosgrove, Northamptonshire

NOTES: The Grand Union Canal, linking London with the industrial Midlands, was built for The Canal Company between 1793 and 1805. William Jessop was the chief engineer for The Canal Company and decided to cross the valley with an aqueduct thus avoiding the need to build a number of expensive locks. The acqueduct was designed by Benjamin Bevan of Leighton Buzzard, another engineer with the company, and it was manufactured by Reynolds and Company at their Ketley Iron Works in the West Midlands.