The A431 is an A road running from Bristol to Bath in England. It runs parallel to, and about 3 miles (4.8 km) to the north of, the A4, the principal route between Bristol and Bath on the south side of the River Avon.
The A431 begins at a junction with the A420 at St George, about a mile (1.6 km) east of central Bristol. From there it runs through Hanham, Longwell Green, Bitton and Kelston to Bath.
In February 2014 the road was closed near Kelston Park due to a landslip. The closure could last for a year as the ground has continued to move and could slip further.
Coordinates: 51°25′24″N 2°27′20″W / 51.42332°N 2.45553°W / 51.42332; -2.45553