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E4 The Stockholm bypass – Förbifart Stockholm – is a new route for the European highway (E4) past the Swedish capital.
The new link will connect the southern and northern parts of the Stockholm county, relieve the arterial roads and the inner city of traffic and reduce the vulnerability of the Stockholm traffic system.
A new link west of Stockholm has been under investigation for several decades and a large number of different alternatives have been studied. To reduce the impact on sensitive natural and cultural environments, just over 18 km of the total of 21 km of the link are in tunnels.
The land aquisition plan is now adopted and approved by the government. The work on the project planning for building documentation is ongoing. The construction work for the first main contracts started in 2015. The Stockholm bypass will take approximately 15 years to finish.
When the link opens for traffic it will be one of the longest road tunnels in the world. By 2035, the Swedish Transport Administration (Trafikverket) estimates that The Stockholm bypass will be used by approximately 140.000 vehicles per day.