Slovenia: A1 towards Koper restricted near Postojna for months (until mid-November 2026)

On the Slovenian motorway A1 between Unec and Postojna, the most important connection from Ljubljana to the Adriatic coast and onward to Croatia, extensive renovation works have been underway since spring 2026. The on-ramp at the Postojna junction toward Koper is expected to be completely closed until the second half of November 2026, and additionally, traffic in the construction area is reduced to a single lane in each direction with significantly narrowed lanes.

The affected section runs between the Ravbarkomanda viaduct and the Razdrto junction. Anyone traveling toward Koper, Portorož, or further into Croatia in autumn 2026 should expect noticeable delays on this stretch, especially on travel weekends.

Which section is affected?

The works are due to a comprehensive renewal of the road section, including the demolition and reconstruction of a bridge over the Pivka river. The lanes have been narrowed to 3.0 meters (right) and just 2.3 meters (left), which can be particularly tight for wider vehicles and motorhomes.

How long will the restrictions last?

Construction work has already been underway since early March 2026. While the direction toward Ljubljana was reopened in July 2026, the on-ramp toward Koper at the Postojna junction is currently expected to remain closed until the second half of November 2026.

Toll in Slovenia

In Slovenia, the vignette requirement applies to cars, motorcycles, and motorhomes up to 3.5 t gross vehicle weight. For vehicles over 3.5 t gross vehicle weight, the distance-based toll via the DarsGo system with an on-board unit applies instead. As a special toll, Slovenia also charges a fee for the Karawanken Tunnel at the border with Austria.

Anyone traveling through several countries on their trip often gets a better deal with the Europamaut flat rate: for 12.80 euros a month, vignettes for all supported countries are included, with no minimum term and the option to cancel at any time.

The Europamaut team wishes you a pleasant trip!

For more information, please visit our overview page on the Slovenia vignette as well as the page Toll in Slovenia. Anyone also heading toward Zagreb will find details on the second current construction site in our article on the complete closure on the Dolenjska motorway. If you have any questions, you can reach us at any time by email.