Prague's gridlock summer: Road works, travel disruptions, and new ‘tunnelbus’ ahead

Prague is bracing for a summer of significant transit disruptions as major reconstruction projects hit key arterial roads, including the main highway cutting through the city center and the route to Václav Havel Airport.

While drivers and commuters face severe delays starting in July, a highly anticipated new public transport line will debut, connecting Prague 6 and Prague 8 via the Blanka tunnel, reports Metro.cz.

The city is launching several major infrastructure repairs timed for the quieter summer holiday season, but the scale of the projects guarantees traffic bottlenecks.

The main highway (Magistrála) in the city center will see lanes cut for over four months to repair water leaks under the road, while Kbelská Street in the east will reduce traffic to a single lane.

Near the airport, ongoing highway junction construction will trigger severe peak-hour delays, though relief is coming in late summer via a brand-new bus route through the Blanka tunnel.

Transport and mobility: The city center highway (Magistrála) will be reduced to just two lanes in each direction for 126 days starting in July, drastically slowing north-south transit through Prague. On Kbelská Street, traffic will be funneled into single lanes using temporary corridors from July 2 to Aug. 15, risking extreme gridlock during rush hours.

Airport travel time: The reconstruction of the Aviatická interchange on the D7 highway means travelers must add at least 30 extra minutes to their journey to ensure they do not miss their flights.

New transit links: Bus line 145 will launch in the second half of the summer holidays, offering a direct link between Dejvice and Kobylisy via the Blanka tunnel. While it won't have a dedicated lane inside the tunnel, it will get priority at entrances and intersections to avoid traffic.

Relying on Uber, Bolt, or traditional taxis for airport runs this summer is highly risky during peak hours (7:30–9:30 a.m. and 3 p.m.–5:30 p.m.). Missing a flight due to roadwork queues is a real possibility.

To avoid the traffic collapse around the airport, switching to public transport (such as the 59 trolleybus from Nádraží Veleslavín) is strongly recommended, as it bypasses the worst of the highway congestion.

If you are driving through the city center, expect daily bottlenecks near the main train station that will persist well into the autumn.

Pedestrian disruptions: The repairs on the Magistrála are being driven by water leaking into the main train station’s departure hall. While the road is being fixed from above, pedestrians inside Hlavní nádraží may encounter scaffolding, closed corridors, or temporary leaks during heavy summer storms.

Secondary congestion: The lane closures on Kbelská Street will inevitably push heavy freight traffic and daily commuters into residential side streets in East Prague, causing unexpected gridlock in surrounding neighborhoods.

Peak hour crowding: Because driving through the city center will be significantly slower, public transport lines, particularly the Metro C line running parallel to the Magistrála, are expected to experience higher passenger volumes during morning and evening rush hours.

Summer roadwork is a seasonal reality in Prague, as city planners take advantage of July and August when schools are out and many residents leave the city for holidays.

However, the Magistrála project is part of a massive, long-term structural overhaul; while the road restrictions will end after 126 days, the full reconstruction underneath the highway is scheduled to last until 2028.

Conversely, the introduction of line 145 "tunnelbus" marks the first time Prague is utilizing its massive Blanka tunnel complex for regular bus transit, a major milestone for the city's public transport network.