By Toby Stoff.
(Published in Surveying+Spatial Magazine Issue 101, March 2020)
This report provides a comparison of the current world’s steepest street: Ffordd Pen Llech in Harlech, Wales, with its predecessor: Baldwin Street in Dunedin, New Zealand. The analysis covers the three-dimensional shape of both streets, a review of the Guinness World Record parameters used to award the world record to Ffordd Pen Llech, and suggestions for future measurements of the world’s steepest street.
This report finds that Baldwin Street is steeper than Ffordd Pen Llech by 5.2 per cent when the average of left-hand side, centreline and right-hand side gradients of the steepest 10-metre sections of both streets are compared. This report also finds that the centreline of Baldwin Street is 6.2 per cent steeper than Ffordd Pen Llech.