Open Day: Prague Invites Public to Explore Future Radlice Tunnel

At the end of November, visitors will have the opportunity to explore the underground section of the planned Radlická radiála and learn more about one of the Czech capital's most important transport projects.

On Saturday, 28 November 2026, the exploratory tunnel of the future Radlice Tunnel will open its doors to the public. Visitors will have the rare opportunity to take a behind-the-scenes look at the planned transport project and learn more about the geological conditions and the current status of construction preparations. Admission is free, but advance online registration is required.

The Radlická radiála is one of Prague's most significant planned transport infrastructure projects. The new road connection will link the Prague Ring Road with the city's inner ring road. The aim is to reduce traffic congestion on heavily used roads, particularly Plzeňská and Radlická.

A substantial part of the planned route will run underground to protect surrounding residential areas from traffic noise and exhaust emissions.

Visualization: Nová Radlická radiála

A Look Underground with Geologists and Project Planners

During the open day, visitors will have the opportunity to explore the already excavated exploratory tunnel of the future Radlice Tunnel. Experts will explain the technical challenges of the project and the particular geological conditions at the site.

The tunnel was excavated in a challenging geological environment characterised by so-called karst formations. These present particular challenges for the planning and subsequent construction of the tunnel.

“We will route most of the Radlická radiála underground through tunnels to protect the surrounding neighbourhoods from noise and emissions,” explained Prague's First Deputy Mayor for Transport, Jaromír Beránek.

He emphasised that only a visit to the already excavated exploratory tunnel could truly demonstrate the scale of the construction project and the difficult conditions underground. The opportunity to explore the future tunnel alongside geologists and project planners does not come along every day.

Visualization: Nová Radlická radiála

During the guided tours, project representatives will provide information on the results of geological investigations carried out so far, the current status of planning and the next steps in preparing the Radlická radiála. Information boards will also be available inside the tunnel.

For safety reasons, visits will take place in small groups. Each guided tour will last approximately 45 minutes. The first tour begins at 9.45 am and the last at 3.45 pm.

Three Tunnels Planned Between Bucharova and Zlíchov

The planned Radlická radiála will run from the Bucharova junction via Nové Butovice and Jinonice to Zlíchov. Three tunnel sections are planned, named Nové Butovice, Butovice and Radlice.

The project is currently undergoing planning and approval procedures. A decision is expected in 2027.

Free Tours – Registration Opens on 10 November

Participation in the open day is free of charge. Due to limited capacity, advance registration via the official project website is required. Registration opens on Tuesday, 10 November 2026, at 12 noon.

Open Day: Radlice Tunnel
28 November 2026 | 9:45–15:45
Venue: Ke Sklárně, 150 00 Prague 5, near Výtopna Zlíchov – Map

Further information about the project and the open day is available on the official Radlická radiála website.