Clapper bridge

Clapper Bridge

Tarr Steps, Exmoor, Somerset, England
Ancestor	Step-stone bridge
Related	Log bridge
Descendant	Arch bridge, trestle bridge
Carries	footpaths, tracks, roadways
Span range	Short
Material	Stone
Movable	No
Design effort	Low
Falsework required	No

A clapper bridge is an ancient form of bridge found on the moors of the English West Country (Bodmin Moor, Dartmoor and Exmoor) and in other upland areas of the United Kingdom including Snowdonia and Anglesey, Cumbria, Derbyshire, Yorkshire, Lancashire, and in northern Wester Ross and north-west Sutherland in Scotland.^[1][2] It is formed by large flat slabs of stone, often granite or schist. These can be supported on stone piers across rivers, or rest on the banks of streams.