Maud Heath's Causeway stretches for 4.5 miles and includes a stone structure of 60 arches spanning the River Avon and its flood plain in Wiltshire to the north east of Chippenham. It was constructed with a bequest from Maud Heath's will in 1474, to relieve those who would in the future make the journey that she had made herself 2 or 3 times a week for most of her life - to the market at Chippenham.
The raised, arch section lies next to the modern road and carries the path about 6 feet higher than the roadway to allow for the flooding that was common in the middle ages. Indeed, the road still does flood on occasion, leaving cars stranded.