Westway

The Westway is a 2.5 mile-long elevated dual carriageway section of the A40 route in west London running from Paddington to North Kensington. The road was constructed between 1964 and 1970 to relieve congestion at Shepherd's Bush caused by traffic from Western Avenue struggling to enter central London on roads of insufficient capacity. The Westway opened in July 1970 as the A40(M) motorway but lost motorway status in 2000 when responsibility for trunk roads in Greater London was transferred from the Highways Agency to the Greater London Authority.

Route
At its eastern end, the Westway starts to the west of the Marylebone Flyover (A501), which takes traffic over the junction of Edgware Road (A5) and Marylebone Road (A501). Between the elevated Westway and Flyover, a short (100 m) section of surface-level road allows westbound traffic from the Flyover to turn-off on to the Harrow Road (A404) or eastbound traffic from the Harrow Road to access the Flyover. Eastbound traffic from the Westway cannot exit here to reach the Edgware Road and continues on to the Flyover.

Heading west, the Westway rises sharply as it passes Paddington Green (at this point having two lanes in each direction), then crosses the Grand Union Canal branch to Paddington Basin just south of Little Venice. As the road passes Westbourne Green on the north and Royal Oak Underground Station on the south, it gains a lane as a steeply climbing slip-road from Gloucester Terrace joins. In the eastbound direction, a lane is lost as a slip-road descends to cross the National Rail tracks to Paddington Station via the large plate-girder Westbourne Bridge, a road that previously carried traffic from Harrow Road to Bishops Bridge Road but was blocked at the north end and appropriated for the Westway scheme.

Continuing westward, the Westway runs parallel with the main-line railway for about ½ mile before turning south-west at Westbourne Park and crossing the railway to run immediately adjacent to London Underground's Hammersmith and City Line for ¾ mile as far as Ladbroke Grove Station, after which it returns to a more east-west alignment for the ½ mile to the elevated roundabout junction with the West Cross Route (A3220) and flyover that takes vehicles high above the roundabout and Wood Lane (A219) to return to ground level and connect to the end of Western Avenue.

Since the extension westward of the London Congestion Charge Zone on 19 February 2007, the part of the road between Westbourne Park and the Westway roundabout that passes through the zone has been designated as a "free through route" that allows vehicles to cross the zone without paying the charge.

Construction
The route of the Westway was chosen to follow the easiest path from Western Avenue to Paddington by following the route of existing railway lines but passing an eight lane elevated motorway through densely populated Victorian North Kensington involved the clearance of a large number of buildings adjacent to the railway, particularly in the area west of Westbourne Park, where many roads were unceremoniously truncated or demolished to make way for the concrete structures.

At its opening the road was the largest continuous concrete structure in Britain and was constructed with many advanced features such as heating grids on slopes to control the formation of ice. It was planned and constructed in an era before environmental impacts were routinely considered, and it caused much controversy at the time for the effects it and the vehicles it carried had upon the local community and the environment.

Context
The Westway was built to form a link from Paddington to Ringway 1, the innermost circuit of the London Ringways network, part of a complex and comprehensive plan for a network of high speed roads circling and radiating out from central London designed to manage and control the flow of traffic within the capital. This plan had developed from early schemes prior to the Second World War through Patrick Abercrombie's County of London Plan, 1943 and Greater London Plan, 1944 to a 1960s Greater London Council (GLC) scheme that would have involved the construction of many miles of motorway standard roads across the city and demolition on a massive scale.Due to the huge construction costs and widespread public opposition, most of the scheme was cancelled in 1973 and the Westway, the West Cross Route and East Cross Route in east London were the only significant parts to be built.

The construction of the elevated roundabout junction with the West Cross Route was built with the capability to be extended once the planned northern continuation of the West Cross Route was constructed to Harlesden. Two stubs on the roundabout's north side were built for the connection of slip roads and the alignment of the slip roads between the West Cross Route and the roundabout avoid the planned line of the road to the north.

The Westway has also been made famous by songs by British rock bands. The Clash gave the Westway a sarcastic mention in London's Burning: "I'm up and down the Westway, in and out the lights. What a great traffic system, it's so bright. I can't think of a better way to spend the night, than speeding around underneath the yellow lights." In the Blur song "For Tomorrow" part of the lyrics state that a couple have lost their way on the road. The full line is: "London's so nice back in your seamless rhymes // But we're lost on the Westway".

Under The Westway
Under the westway are several community centers including some youth clubs, tourist centers, a sports center and a skate park.