Bigsweir Bridge is an 1827 road bridge crossing the River Wye, straddling the boundary between the parish of St. Briavels, Gloucestershire, England, and Llandogo, Monmouthshire, Wales. It carries the A466 road, and is located about 2 miles (3.2 km) north of the village of Llandogo, 2 miles (3.2 km) south of Whitebrook, and 3 miles (4.8 km) west of the village of St Briavels.