}

SFA Start / New tunnel

Tunnel and waste water treatment plants

A 14 kilometer long tunnel is being built to lead the wastewater from Bromma to Sickla. Once the tunnel has been completed, Bromma wastewater treatment plant will be decommissioned and the wastewater from Västerort can be treated in Henriksdal's wastewater treatment plant, which will be optimized with modern membrane technology.

Construction of the tunnel began in January 2020 and it will be ready to use in 2026.

Karta som visar Avloppstunneln mellan Bromma och Sicklaanläggningen och röda markeringar där sprängningar sker.

Interactive map

On our interactive map you can see how far we have come in our work and get forecasts for when we plan to work in different areas. Zoom in on the map for detailed...

Bergschakt uppe på Henriksdalsberget. I bakgrunden syns Hammarbybacken.

Advance warning of blasting work

We have organised a telephone advice line with which you can register your phone number to receive notification of blasting work.

Karta Tunnelsträckningen med etableringar.png

Planned tunnel route

There are several reasons for the selection of the tunnel route. We aim to build as short a tunnel as possible, with as little impact as possible on people living along t

Skiss som visar huvudtunnelns profil-

What will the tunnel look like?

The diagrams show how the tunnel is designed and what it will look like in section.

Kvarnholmsvägen 2.jpg

How the tunnel will be constructed

The tunnel will be constructed using traditional blasting technology in our construction work, where the rock is first drilled and then blasted with explosives. Read...

FAQ – About the tunnel

Frequently asked questions about the wastewater tunnel.