The A490 is a road in the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...

running from Churchstoke,

Powys Powys ( , ) is a Principal areas of Wales, county and Preserved counties of Wales, preserved county in Wales. It borders Gwynedd, Denbighshire, and Wrexham County Borough, Wrexham to the north; the English Ceremonial counties of England, ceremo ...

Llanfyllin Llanfyllin ( – ) is a market town and Community (Wales), community in Powys, Wales. The community (which measures 41.8 square kilometres) population in 2021 was 1,586 and the town's name means ''church or parish'' (Llan (placename), llan) ''o ...

, also in Powys. The road runs for a short distance through

Shropshire Shropshire (; abbreviated SalopAlso used officially as the name of the county from 1974–1980. The demonym for inhabitants of the county "Salopian" derives from this name.) is a Ceremonial counties of England, ceremonial county in the West M ...

in England.

The route

The road starts in Churchstoke at a junction with the A489. From here it heads north, crossing over the border into Shropshire, and passes through Chirbury. After Chirbury it crosses back into Powys and past Forden. It then crosses over the

River Severn The River Severn (, ), at long, is the longest river in Great Britain. It is also the river with the most voluminous flow of water by far in all of England and Wales, with an average flow rate of at Apperley, Gloucestershire. It rises in t ...

and heads by Welshpool Airport. It crosses the

A483 The A483, officially described as the Swansea to Manchester Trunk Road, although now ending in Chester, is a major road in the United Kingdom. It runs from Swansea in Wales to Chester in England via Llandovery, Llandrindod Wells, Oswestry and W ...

approximately 1 mile south of

Welshpool Welshpool ( ) is a market town and Community (Wales), community in Powys, Wales, historically in the Historic counties of Wales, county of Montgomeryshire. The town is from the Wales–England border and low-lying on the River Severn. The c ...

and then runs through the town's western suburbs before joining the A458 in the town centre. The two A-routes run together for less than a mile; at Raven Square roundabout the A490 splits off from the A458 and continues north. It crosses the

River Vyrnwy The River Vyrnwy (, ) flows through northern Powys, Wales, and Shropshire, England. The name derives from Severn, the river of which it is a tributary. Course The river used to be sourced from the many rivers and streams running off the mount ...

before joining for a short distance the A495. A few miles after splitting off from the A495 it reaches Llanfyllin, and shortly after ends by splitting into the B4391 and B4393 roads. Roads in Wales Transport in Shropshire Transport in Powys {{Wales-road-stub