The traffic must take an alternative route between nine in the evening and five in the morning. For example, Rijkswaterstaat can undisturbed with the repair of damaged crash barriers, maintenance of signs and lights. In addition, the grass is mowed and the road gets a sweeping.
Detour
Between Schoorldam and the Huiswaarderweg in Alkmaar, the N9 is closed in both directions from Tuesday evening, 17 June to Wednesday morning, June 18. The traffic is then diverted via the N242, N508, N245, N504 and the N9.
Then it is the turn of the part between Schoorldam and the Stolpen. The traffic towards the Stolpen is diverted from Wednesday evening to Friday morning via the N99, N249, N248 and the N9. Motorists in the direction of Alkmaar have to divert those evenings to the N245, N248 and the N503.