So far this year about 63% of the length of the E4 tunnel which is part of the Forbifart Stockholm project has been completed. The team working on the project have averaged about 680 meters per month, click here to view the video.
The E4 Bypass Stockholm is a 21 km long new section of the E4, 18 km of which are part of a tunnel close to the urban environment. The road goes from Kungens kurva in the south to Haggvik in the north with six new traffic locations above ground. It runs under Lake Malaren, through nature reserves and close to a world heritage site. The travel time for the entire route is estimated at 15 minutes. The construction period is approximately fourteen years with full opening to traffic in 2030.
A major hurdle was overcome on 14/09/2020 when the first of three under Lake Malaren passages were completed. A 200 m tunnel has been blasted at just 70 m between the beach in Satra shipyard and the island of Kungshatt with all the walls being reinforced. The tunnel alignment has been through a zone of weakness. The ice sheet and other large movements have affected the area and made the rock of varying quality, with cracks with clay in certain passages. About 82,000 cubic meters of rock have been blasted out and transported away under Lake Malaren's waters. The rocks not needed within the project have been sold to external contractors who will use them in other construction projects around the region.
The others two passages will then be built between Kungshatt and Lovon and also between Lovon and Grimsta.
The Stockholm bypass will go in a tunnel under Lake Malaren and Lovon in Ekero municipality. It will be linked with the Ekero’s road 261 with roundabouts at Edeby and at Tillflykten. The Ekerovägen, between Tappstrom and Nockeby, will be widened with another lane to be used by public transport in rush hour traffic. The 178 m Lindo tunnel will have another tunnel tube for traffic towards Ekero. Blasting work has already begun on both these tunnels.
During the autumn, work will continue across the project for further information please click here and se/37 for tunnelbuilder archive. Visit www.trafikverket.se. 38/20.
