The A4130 is a British A road which runs from a junction with the A404

A404 road

The A404 is a road in the United Kingdom that starts at Paddington in London and leads to Maidenhead in Berkshire.The road initially follows a course through London and its suburbs including Harlesden, Wembley, Harrow Pinner, and Rickmansworth...

 at Burchetts Green, Berkshire

Berkshire

Berkshire is a historic county in the South of England. It is also often referred to as the Royal County of Berkshire because of the presence of the royal residence of Windsor Castle in the county; this usage, which dates to the 19th century at least, was recognised by the Queen in 1957, and...

 to the A417

A417 road

-Streatley - Gloucester :It runs from Streatley at its junction with the A329 to Wantage, over the picturesque Berkshire Downs. In Wantage, it negotiates the market place -Streatley - Gloucester (M5):It runs from Streatley at its junction with the A329 (between Reading and Wallingford) to Wantage,...

 at Rowstock in Oxfordshire

Oxfordshire

Oxfordshire is a county in the South East region of England, bordering on Warwickshire and Northamptonshire , Buckinghamshire , Berkshire , Wiltshire and Gloucestershire ....

. It passes through Henley-on-Thames

Henley-on-Thames

Henley-on-Thames is a town and civil parish on the River Thames in South Oxfordshire, England, about 10 miles downstream and north-east from Reading, 10 miles upstream and west from Maidenhead...

, and Nettlebed

Nettlebed

Nettlebed is a village in England in the Chiltern Hills about northwest of Henley-on-Thames in Oxfordshire and southeast of Wallingford.-History:Archaeological finds show that the area around Nettlebed has been inhabited since Palaeolithic times....

, and bypasses Wallingford and Didcot

Didcot

Didcot is a town and civil parish in Oxfordshire about south of Oxford. Until 1974 it was in Berkshire, but was transferred to Oxfordshire in that year, and from Wallingford Rural District to the district of South Oxfordshire...

.

Until the 1970s the road ended at a junction with the A417

A417 road

-Streatley - Gloucester :It runs from Streatley at its junction with the A329 to Wantage, over the picturesque Berkshire Downs. In Wantage, it negotiates the market place -Streatley - Gloucester (M5):It runs from Streatley at its junction with the A329 (between Reading and Wallingford) to Wantage,...

 at Harwell

Harwell, Oxfordshire

Harwell is a village and civil parish in the Vale of White Horse west of Didcot. It was part of Berkshire until the 1974 boundary changes transferred it to Oxfordshire.-Amenities:...

. When the A34 was upgraded in the 1970s, the A4130 was extended north from Rowstock along the old line of the A34 to an interchange with the new A34 at Milton Heights, near Milton Park

Milton Park

Milton Park is a mixed use business park operated by MEPC plc. It is just south of the village of Milton, Oxfordshire, about west of Didcot. It is on the site of a former Ministry of Defence depot between the A34 and Didcot Power Station. Although closer to Didcot, it lies within the Abingdon...

. A few years later, a new link road was built from Didcot to Milton Heights and became the A4130. The old route between Didcot and Harwell was then downgraded to become the B4493.

Until 1990 the road started at a junction with the A423

A423 road

The A423 road is a primary A road in England which leads from central Banbury to the A45 near Coventry. It starts in Banbury town centre as Southam Road and goes through the Southam Road Industrial Estate, then just north of Banbury it crosses over the M40, from there it passes close to several...

 1.2 miles (1.9 km) west of Nuffield

Nuffield

Nuffield may refer to:*Nuffield College, Oxford, one of the constituent colleges of the University of Oxford in the United Kingdom*Nuffield Foundation, a British charitable trust, established in 1943 by William Morris...

, and the 2.5 miles (4 km) stretch between that point and Crowmarsh Gifford

Crowmarsh Gifford

Crowmarsh Gifford is a village in the civil parish of Crowmarsh in South Oxfordshire. It is beside the River Thames opposite the market town of Wallingford, the two being linked via Wallingford Bridge...

 was designated a trunk road

Trunk road

A trunk road, trunk highway, or strategic road is a major road—usually connecting two or more cities, ports, airports, and other things.—which is the recommended route for long-distance and freight traffic...

. The road between Burchetts Green and Nuffield was part of the A423 trunk road. When the M40 motorway

M40 motorway

The M40 motorway is a motorway in the British transport network that forms a major part of the connection between London and Birmingham. Part of this road forms a section of the unsigned European route E05...

 was opened, the A423 and the A4130 both lost trunk road status, and that part of the A423 was renumbered A4130.

In 1993 the Wallingford By-pass was opened, and the A4130 was diverted to follow the new road, crossing the River Thames

River Thames

The River Thames flows through southern England. It is the longest river entirely in England and the second longest in the United Kingdom. While it is best known because its lower reaches flow through central London, the river flows alongside several other towns and cities, including Oxford,...

 by the new Winterbrook Bridge instead of Wallingford Bridge

Wallingford Bridge

Wallingford Bridge is a medieval road bridge over the River Thames in England which connects Wallingford and Crowmarsh Gifford, Oxfordshire . It crosses the Thames on the reach between Cleeve Lock and Benson Lock...

.