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|---|---|---|---|---|
 A405 west of Park Street | ||||
| Route information | ||||
| Length | 4.8 mi (7.7 km) | |||
| Major junctions | ||||
| West end | Leavesden Green | |||
 A41  A412  M1  M25  A414  A5183 | ||||
| East end | St Albans | |||
| Location | ||||
| Country | United Kingdom | |||
| Primary destinations | Watford | |||
| Road network | ||||
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The A405 is a 4.8 miles (7.7 km) dual carriageway road in Hertfordshire, England, from the A41 at Leavesden Green, near Watford, to the A414 at Park Street Roundabout near St Albans.
The A405 starts at a grade-separated roundabout junction with the A41 at Leavesden Green. From here, it travels northeast to a crossing with Sheepcot Lane at Woodside, then east to a traffic light junction with the A412 near Garston. This 1.4-mile (2.2-km) section is known as Kingsway.
From the A412, the A405 travels north, past West Hertfordshire Crematorium and Penfold Park Golf Course, to junction 6 of the M1 at Waterdale (2.3 miles, 3.7 km).
It then veers northeast, passing the village of Bricket Wood, before meeting the M25 at junction 21a (3.1 miles, 5 km). Drivers wishing to access the M25 from the M1 northbound, or the M1 southbound from the M25, must use this section of the A405 as the junction between the two motorways, known as Chiswell Interchange, does not feature the corresponding slip roads. [1]
After the M25, the A405 continues northeast, with a roundabout junction with the B4630 for Chiswell Green (3.6 miles, 5.8 km), then another with Tippendell Lane for How Wood (4.2 miles, 6.8 km). The road terminates at Park Street Roundabout, a junction with the A414 and the A5183 (formerly part of the A5); until 2009 this was junction 1 of the M10.
The A405 originally took up a greater proportion of the North Orbital Road. From Park Street Roundabout, it travelled east, crossing the River Ver and the Midland Main Line before meeting the A6 (now the A1081) at London Colney. It then veered northeast, past Colney Heath, before ending at the A1 near Hatfield. This gave it a total length of 9.7 miles (15.6 km).
The section of the A405 east of Park Street Roundabout was re-designated as part of the A414 (the original St Albans–Hatfield section of that road becoming the A1057).
In 1976, extending westwards to bypass Rickmansworth, the A405 joined the A412 at Maple Cross. In 1985, this section became part of the M25 motorway between junction 17 and junction 19. Junction 18 in Chorleywood is with the A404 was built in 1978.
Hertfordshire is a ceremonial county in the East of England and one of the home counties. It borders Bedfordshire to the north-west, Cambridgeshire to the north-east, Essex to the east, Greater London to the south, and Buckinghamshire to the west. The largest settlement is Watford, and the county town is Hertford.
St Albans is a cathedral city in Hertfordshire, England, east of Hemel Hempstead and west of Hatfield, 20 miles (32 km) north-west of London, 8 miles (13 km) south-west of Welwyn Garden City and 11 miles (18 km) south-east of Luton. St Albans was the first major town on the old Roman road of Watling Street for travellers heading north and became the city of Verulamium. It is within the London commuter belt and the Greater London Built-up Area.
The M1 motorway connects London to Leeds, where it joins the A1(M) near Aberford, to connect to Newcastle. It was the first inter-urban motorway to be completed in the UK; the first motorway in the country was the Preston Bypass, which later became part of the M6.
The A41 is a trunk road between London and Birkenhead, England. Now in parts replaced by motorways, it passes through or near Watford, Kings Langley, Hemel Hempstead, Aylesbury, Bicester, Solihull, Birmingham, West Bromwich, Wolverhampton, Newport, Whitchurch, Chester and Ellesmere Port.
The A1, also known as the Great North Road, is the longest numbered road in the United Kingdom, at 410 miles (660 km). It connects London, the capital of England, with Edinburgh, the capital of Scotland. It passes through or near north London, Hatfield, Welwyn Garden City, Stevenage, Baldock, Letchworth Garden City, Biggleswade, Eaton Socon, Buckden, Peterborough, Stamford, Grantham, Newark-on-Trent, Retford, Doncaster, Pontefract, York, Wetherby, Ripon, Darlington, Durham, Gateshead, Newcastle upon Tyne, Morpeth, Alnwick and Berwick-upon-Tweed.
The M40 motorway links London, Oxford, and Birmingham in England, a distance of approximately 89 miles (143 km).
St Albans, commonly known as the City and District of St Albans, is a local government district with city status in Hertfordshire, England. Its council is based in St Albans, the largest settlement in the district. The district also includes the town of Harpenden and several villages. The district borders North Hertfordshire, Welwyn Hatfield, Hertsmere, Watford, Three Rivers, Dacorum, and Central Bedfordshire.
London Colney is a village and civil parish in Hertfordshire, England. It is located to the north of London, close to Junction 22 of the M25 motorway.
The A414 is a major road in England, which connects the towns of Hemel Hempstead in Hertfordshire and Maldon in Essex. The road commences at the A41, at a junction west of Hemel, and travels through the town to junction 8 of the M1 motorway at Buncefield. From there, it runs parallel to the M1 until junction 7, heading south of St Albans and east through Hatfield and Hertford. The road then crosses the A10 and into Essex; it travels through Harlow, Chipping Ongar and Chelmsford, before terminating at Maldon.
The M10 was a motorway in Hertfordshire, England, running for approximately 3 miles (4.5 km) from the M1 motorway at junction 7 near Hemel Hempstead to the A414 North Orbital Road at Park Street Roundabout, just south of St Albans. Opened in 1959, it was reclassified as part of the A414 in 2009 having only been a spur motorway for 50 years.
The A1081 is a road in the south of England. It starts at Luton Airport in Bedfordshire and runs to High Barnet in Greater London via Harpenden, St Albans and London Colney, a distance of around 20.5 miles (33.0 km). For most of its length, the A1081 follows the route of the original A6.
St Stephen is a civil parish in the St Albans City and District in Hertfordshire, England. It is located approximately 17 miles (27 km) north-northwest of central London, straddling the M25 motorway and immediately adjacent to the southern boundary of St Albans. St Stephen is a partly urbanised parish with multiple centres of activity and open land that forms part of the Metropolitan Green Belt. The local council is St Stephen Parish Council. The parish covers Bricket Wood, Chiswell Green, Frogmore, Colney Street, How Wood and Park Street. It is an ancient parish, and sections of it were transferred to St Albans progressively up to 1935. At the 2011 census it had a population of 13,865.
Park Street is a small Hertfordshire village on the southern outskirts of, and around 2 miles (3.2 km) south of the city centre of, St Albans in England; it is separated from the much of the latter's contiguous built-up area by a buffer to the north.
Chiswell Green is a village, on the southern outskirts of St Albans, in the parish of St Stephen and district of the City of St Albans in Hertfordshire. It has a population of approximately 2,800.
The A412 is a road in England between Slough and Watford. It was the main artery for this corridor and used to continue to St Albans prior to the construction of the M25. It provides interchange to the A4 in Slough, the A40/M40 at the Denham Roundabout, the M25 in Maple Cross, the A404 in Rickmansworth town centre, the A411 on a partially grade separated dual carriageway in Watford town centre, and the A41 in North Watford.
The A4008 is a local road in south east England.
The Galleria is a designer outlet centre in Hatfield, Hertfordshire in South-East England.
Napsbury Park is a residential development in Hertfordshire, England. It is located to the north of London, at Junction 22 of the M25 motorway and Junction 6 of the M1 motorway. It is protected by a Conservation Area.
Leavesden is a residential and commercial area in the northern part of Watford, England. It lies within the M25 Motorway. On its eastern side it is bounded by the M1 Motorway. Leavesden is split into two councils which are Watford Borough Council and Three Rivers District Council. Leavesden Green is an adjoining residential community which lies partly in Three Rivers and partly in the Borough of Watford.
National Cycle Route 61 is part of the National Cycle Network managed by the charity Sustrans. It runs for 34 miles from Maidenhead (Berkshire) to Rye House (Hertfordshire) via Uxbridge, Watford, St Albans, Hatfield, Welwyn Garden City and Hertford in the United Kingdom.
A roads in Zone 4 of the Great Britain road numbering scheme | ||
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