Historic bridges · South Wales
The Big Arch
Also known as: Y Bwa Mawr
The Big Arch is a historic bridge in the United Kingdom.

Wikimedia Commons contributors — see linked file page for photographer and licence licence
Plan your visit
- Typical visit
- 15 min–30 min
- Nearest railway station
- Blaenavon High Level · 4.9 km
- Free entry
- Dog-friendly
About
The Big Arch is a historic bridge in South Wales. The site is a designated Site of Special Scientific Interest. It sits within the Torfaen parliamentary constituency. The nearest railway station is Blaenavon High Level, about 4.9 km away. Postcode area NP4.
Photo gallery
Heritage listing
http://cadwpublic-api.azurewebsites.net/reports/listedbuilding/FullReport?lang=en&id=14871
From Cadw under OGL v3.
Protected designations
- Site of Special Scientific Interest: River Wye SSSI
Designations sourced from Natural England open data under OGL v3.
Place summary
The Big Arch, also known as Y Bwa Mawr, is a bridge located in Abersychan, South Wales. It is designated as a Site of Special Scientific Interest (SSSI) due to its proximity to the River Wye SSSI.
AI-generated from the structured facts on this page (operator, designation, listing, era). Not a substitute for visiting.
- Coordinates
- 51.7253, -3.0728
- District
- Torfaen
- Parish
- Abersychan
- Postcode
- NP4 7EF
- Parliamentary constituency
- Torfaen
- Nearest railway station
- Blaenavon High Level — 4.9 km
Sources
- osm: w1140608042 (ODbL)
- commons: Railway arch - geograph.org.uk - 558133.jpg (CC BY-SA 4.0)
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Frequently asked questions
- Where is The Big Arch?
- The Big Arch is in South Wales, United Kingdom (postcode NP4 7EF), in the parish of Abersychan.
- Is The Big Arch a listed building?
- The Big Arch is officially recognised as II listed.
- Is The Big Arch a protected site?
- Yes — The Big Arch is part of the River Wye SSSI Site of Special Scientific Interest.
- Is The Big Arch free to visit?
- Yes, The Big Arch is free to enter.
- How do I get to The Big Arch?
- The nearest railway station is Blaenavon High Level, about 4.9 km away. Drivers can navigate to postcode NP4 7EF.