Thorpe Interchange

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Thorpe Interchange

M25 junction 12 intersection with M3 - geograph.org.uk - 291771.jpg

Thorpe Interchange from the south west in May 2001; it is junction 12 of the M25 and junction 2 of the M3
Location
Surrey
Coordinates 51°24′N0°32′W / 51.40°N 0.54°W / 51.40; -0.54 Coordinates: 51°24′N0°32′W / 51.40°N 0.54°W / 51.40; -0.54
Roads at
junction
Construction
Opened 9 October 1980 (1980-10-09)
Maintained by Highways Agency

The Thorpe Interchange is a large motorway free-flow intersection in Surrey, United Kingdom, connecting the M3 with the M25.

A free-flow interchange is an interchange in which all roads are grade-separated, and where movement from one road to another does not require the driver to stop for traffic. Free-flow interchanges are less likely to induce traffic congestion than non-free-flow, but are typically more expensive both in money and in land.

Interchange (road) road junction, typically using grade separation

In the field of road transport, an interchange is a road junction that uses grade separation, and typically one or more ramps, to permit traffic on at least one highway to pass through the junction without interruption from other crossing traffic streams. It differs from a standard intersection, where roads cross at grade. Interchanges are almost always used when at least one road is a controlled-access highway or a limited-access divided highway (expressway), though they are sometimes used at junctions between surface streets.

Surrey County of England

Surrey is a subdivision of the English region of South East England in the United Kingdom. A historic and ceremonial county, Surrey is also one of the home counties. The county borders Kent to the east, East and West Sussex to the south, Hampshire to the west, Berkshire to the northwest, and Greater London to the northeast.

Contents

History

M3

The section of the M3 that passes through the interchange (Bagshot A322 to Sunbury Cross A308, junctions 1-3) opened on 11 July 1974. [1] The A316 from Sunbury Cross (eastwards) was improved at the same time. It was the last of four contracts of the first main section of the M3. Construction of this section of the M3 had begun in January 1971. The £12.7m contract was awarded to A.E. Farr of Westbury, Wiltshire. [2] The section involved building fifty bridges.

Bagshot village in United Kingdom

Bagshot is a large village in the southeast of England. It is situated in the northwest corner of Surrey within the county's Surrey Heath council district, close to the border with Berkshire, and is also in the diocese of Guildford. In the past, Bagshot served as an important staging post between London, Southampton and the West Country. Evidence of this can be seen in some of the original coaching inns that are still there today.

Sunbury-on-Thames town in Surrey, England

Sunbury-on-Thames is a suburban village in the borough of Spelthorne, in the county of Surrey in England. It extends from the left bank of the River Thames and the south-west of the Greater London boundary and is approximately 13 miles (21 km) from Charing Cross, London. Suburban neighbourhoods make up most of its area, Lower Sunbury, added to which is part of the Metropolitan Green Belt including Kempton Park. The town centre is by the London end of the M3 motorway, elsewhere are three shopping parades and riverside public houses. In tourism Lower Sunbury holds an annual fair and regatta each August.

A308 road road in England

The A308, is a road in England in two parts. The road has four principal axes to stay no more than 3 miles (4.8 km) from the River Thames to run from Central London upstream to Bisham, Berkshire which faces the town of Marlow across the river, explaining its four main orientations. The road is dualled each way in the section furthest from the River Thames, in north Surrey and forms one of the motorway spurs to the large town of Maidenhead.

M25

The section of the M25 to the north began in August 1974 and opened in December 1976. The section of the M25 to the south (Chertsey to Thorpe) began in July 1978 and opened on 9 October 1980.

The M25 north of here to the junction with the M4 junction 15, is one of the busiest roads in the UK. The M25 reached the M4 from the M3 in 1985.

M4 motorway motorway in the United Kingdom

The M4, a motorway in the United Kingdom running from west London to southwest Wales, was originally referred to as the London-South Wales Motorway. The English section to the Severn Bridge was constructed between 1961 and 1971; the Welsh element was completed in 1993. The Second Severn Crossing officially renamed the Prince of Wales Bridge, was inaugurated on 5 June 1996 by HRH The Prince of Wales and the M4 was rerouted. Apart from its two spurs—the A48(M) and the M48—the M4 is the only motorway in Wales.

Construction

Construction of the full interchange began in July 1978 and it opened in 1980.

Structure

The junction is junction 2 of the M3, and junction 12 of the M25. The M25 north of the junction is 5 lanes, and south of the junction it is 4 lanes wide. The next junction north along the M25 is the Addlestone Interchange, and south along the M25 is the Runnymede Interchange. The design is a turbine interchange. The B389 (west) and B388 (east) pass east-west close to the north of the interchange. Chertsey is around one mile to the south-east. The Chertsey Branch Line passes close to the south-west, between Virginia Water railway station (to the west), and Chertsey railway station (to the south-east).

Chertsey town in Surrey, England

Chertsey is a town in the Runnymede borough of Surrey, England on the right bank of the River Thames where it is met by a corollary, the Abbey River and a tributary, the River Bourne or Chertsey Bourne. It is within a narrow projection of the Greater London Urban Area, aside from the Thames bordered by Thorpe Park, junction 11 of the M25 London orbital motorway, the town of Addlestone and south-western semi-rural villages that were formerly within Chertsey. Chertsey is centred 29 kilometres (18 mi) southwest of central London, has a branch line railway station and less than 1 mile (1.6 km) north of its developed centre is the M3 (motorway).

Virginia Water railway station railway station

Virginia Water railway station serves the village of Virginia Water, in Surrey, England. It is 23 miles 15 chains (37.3 km) down the line from London Waterloo. The station, and all trains serving it, are operated by South Western Railway.

Chertsey railway station Runnymede, Surrey, KT16

Chertsey railway station serves the town of Chertsey in the Runnymede District of Surrey, England. It is located on the Chertsey Branch of the Waterloo to Reading Line and is operated by South Western Railway.

Looking west along the M3 in February 2009 M3, Thorpe Interchange - geograph.org.uk - 1165420.jpg
Looking west along the M3 in February 2009

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References