A packhorse bridge is a bridge intended to carry packhorses (horses loaded with sidebags or panniers) across a river or stream. Typically a packhorse bridge consists of one or more narrow (one horse wide) masonry arches, and has low parapets so as not to interfere with the panniers borne by the horses.^[1] Multi-arched examples sometimes have triangular cutwaters that are extended upward to form pedestrian refuges.^{[2]: 24–25}

Packhorse bridges were often built on the trade routes (often called packhorse routes) that formed major transport arteries across Europe and Great Britain until the coming of the turnpike roads and canals in the 18th century.^[1] Before the road-building efforts of Napoleon, all crossings of the Alps were on packhorse trails.^[3] Travellers' carriages were dismantled and transported over the mountain passes by ponies and mule trains.

In the British Isles at least, the definition of a packhorse bridge is somewhat nebulous. Ernest Hinchliffe discusses the difficulty of defining a true packhorse bridge in A Guide to the Packhorse Bridges of England.^[2] He claims that "before the eighteenth century bridges were described as 'horse bridges' or 'cart bridges'" and his strict definition excludes the latter. He suggests that a classic packhorse bridge should generally be:

• less than 6 feet (1.8 m) in width;
• built before 1800;
• on a recognised packhorse route.

He categorises the 190 English bridges listed in his book into three groups:

• Group 1: 6 feet (1.8 m) wide or less, built before 1800 and with known packhorse associations;
• Group 2: bridges that fail one or other of the above criteria, but which are generally referred to as packhorse bridges;
• Group 3: bridges sometimes claimed as packhorse bridges, but dismissed as such by the author.^[2]: 6–7

The difficulty of classification is illustrated by Moulton Bridge in Suffolk, which Hinchliffe places in Group 1 but which English Heritage describes as "perhaps not strictly a packhorse bridge since it was wide enough to take carts".^[4]

The following list includes all listed buildings described as packhorse bridges by English Heritage, Cadw, or Historic Scotland; all 106 of Hinchliffe's Group 1 bridges in England; and certain other candidates. (For England, Hinchliffe's Group numbers are given as superscripts after the bridge name.)

Wales

More information County, Location ...

County	Location	Name	Photograph	Crosses	Notes
Blaenau Gwent	Aberbeeg 51.7101°N 3.1442°W / 51.7101; -3.1442	Aberbeeg Packhorse Bridge		Ebbw Fach River	Grade II listed.[197]
Conwy	Penmachno 53.0599°N 3.7807°W / 53.0599; -3.7807	Roman Bridge		River Machno	Grade II listed.[198]
Flintshire	Caergwrle 53.1109°N 3.0367°W / 53.1109; -3.0367	Caergwrle Packhorse Bridge		River Alyn	Mid-17th-century; "one of the finest examples in Wales".[199] Grade II listed.[200]
Flintshire	Ffrith 53.0901°N 3.0657°W / 53.0901; -3.0657	Ffrith Bridge		River Cegidog	Probably 18th-century; single-span. Grade II listed, Scheduled monument.[201]
Gwynedd	Dyffryn Ardudwy 52.7919°N 4.0253°W / 52.7919; -4.0253	Pont Scethin		Afon Ysgethin	Probably 18th-century; single arch. Scheduled monument.[202]
Gwynedd	Minllyn 52.7070°N 3.6961°W / 52.7070; -3.6961	Pont Minllyn		River Dovey	Probably 17th-century; two segmental arches. Grade II listed,[203] Scheduled monument.[204]
Powys	Llangenny 51.8636°N 3.1067°W / 51.8636; -3.1067			Grwyne Fawr	Grade II listed.[205]
Swansea	Cheriton 51.6111°N 4.2262°W / 51.6111; -4.2262	Kittlehill Packhorse Bridge		Burry Pill	Grade II listed.[206]

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