A9 closed towards Badhoevedorp from Holendrecht this weekend

The A9 is closed this weekend from 20:00 until 05:00 on Monday between the Holendrecht interchange and exit 6 (Aalsmeer), in the direction of Badhoevedorp. Traffic from the Badhoevedorp interchange towards Holendrecht is not affected.

The diversion sends drivers over the A2, A10 and A4. Rijkswaterstaat, the national roads agency, estimates that it adds 10 to 30 minutes to journeys, depending on traffic.

Only one direction is shut. Drivers going from the Badhoevedorp interchange towards Holendrecht can use the A9 as normal, while those travelling the other way must take the diversion until early Monday morning.

The Aalsmeer on-ramp stays open, so drivers can join the A9 there and continue towards the Badhoevedorp interchange.

During the closure the contractor is fitting lava rock in the wall of the northern cut-and-cover tunnel, Rijkswaterstaat says. Noise barriers are also being put in place.

The northern cut-and-cover tunnel was delivered in July of this year, and traffic has used it in both directions since September. The contractor will keep building the southern one in the coming years. It is due to be delivered in mid-2029.

The closure follows several weekends with no partial closures of the A9.