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Latitude: 51.7954 / 51°47'43"N
Longitude: -3.9737 / 3°58'25"W
OS Eastings: 263983
OS Northings: 212592
OS Grid: SN639125
Mapcode National: GBR DX.Y0Z2
Mapcode Global: VH4JJ.24LH
Entry Name: Pontamman Bridge
Listing Date: 29 May 1997
Last Amended: 29 May 1997
Source ID: 18468
Building Class: Transport
Location: Forms part of NE Betws parish boundary. Replaced by recent concrete section road bridge located approx.100m upstream, as part of new A474 road-works. Links with stone arched rail-viaduct to north.
Community: Ammanford (Rhydaman)
Built-Up Area: Ammanford
Traditional County: Carmarthenshire
Disused road bridge over river Amman, originally later C18 or early C19, doubled in width with new parapets in late C19. There was a bridge at Betws described as a single arch of 13.7metres span, designed about 1775 by William Edwards, but this may have been located downstream at the present location of Betws bridge, shown in a c1847 sketch by J Harwood.
Single arch stone bridge, of approx. 18m span, with clear longitudinal break between earlier W part and later E part. The W part has masonry in small coursed stone and unusual arch voussoirs of alternate sizes. The E side has squared rubble masonry with black-ash mortar. Arch has stone voussoirs and keystone. Parapets on both sides have large rock-faced coping stones with tooled arises.
Listed as a later C18 or early C19 bridge of impressive single span. Sole surviving masonry bridge over river Amman in region, unusually constructed in two longitudinal phases.
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