Gelli Bridge is a Grade II listed two-arch bridge spanning the

River Syfynwy River Syfynwy (Welsh: ''Afon Syfynwy'', ''Syfnwy'' or ''Syfni'') is a river entirely within Pembrokeshire, Wales, rising in the Preseli Mountains, feeding the Rosebush, Pembrokeshire, Rosebush and Llys y Fran reservoirs and joining the Eastern Cl ...

a few yards before its confluence with the

Eastern Cleddau The River Cleddau () consists of the Eastern and Western Cleddau rivers in Pembrokeshire, west Wales. They unite to form the Daugleddau estuary and the harbour of Milford Haven Waterway. The name of the combined estuary – the Daugleddau – ...

. The date of the bridge is not known, though projecting keystones suggest it is 18th century. It has been modified since its original construction. The unequal semicircular arches span 7 m and 4 m and the roadway is 2.4 m between the parapets, with wider approaches. It may originally have had a third, small arch to the east of the main span. The bridge is listed twice (with different IDs and dates) because it falls within two parishes. This listed bridge is not to be confused with several other bridges in the vicinity which carry road and rail across the Eastern Cleddau and another tributary.Ordnance Survey

References

Bridges in Pembrokeshire Grade II listed buildings in Pembrokeshire {{pembrokeshire-struct-stub