From Friday morning 23 May 10 a.m. until Friday morning 30 May 2025 05 a.m., the Kooybrug will be closed to all road traffic in both directions and to shipping with a headway of 8.30 m or more. The seven consecutive days and nights are needed to carry out the final work on the bridge, including the application of a protective layer that will protect the bridge from wear and tear. Traffic should expect severe disruption and considerable extra travel time.
Diversions Kooybrug road traffic
Road users should expect significant extra travel time of up to 30 minutes at busy times. Yellow signs along the N-roads indicate the diversion routes. Emergency and auxiliary services and Connexxion buses have passage via the marine site.
- Diversion from Afsluitdijk/Hoorn/Medemblik towards Den Helder/Texel via the A7, N248 and the N9 (Wieringerwerf/Middenmeer).
- From Middenmeer/Wieringermeer towards Den Helder/Texel via the N248 or N249 and the N9.
- From Amsterdam/Haarlem and south of it towards Den Helder/Texel via the N9.
- From Den Helder/Texel towards the Afsluitdijk/Medemblik/Hoorn via the N9, N248 and the A7 (Middenmeer/Wieringerwerf).
- From Schoorl/Alkmaar towards the Afsluitdijk/Medemblik/Hoorn via the N9, N504, N242 and the A7 (Middenmeer/Wieringerwerf).
There is no direct connection for cyclists and pedestrians. Cyclists are advised to cross the Noordhollandsch Kanaal via Ferry Westeinde. A shuttle bus will run between Breezand and Anna Paulowna for pedestrians and (moped) cyclists who normally cross the Kooybridge. From Anna Paulowna, regular public transport can be used. Replacement transport for schoolchildren has been arranged in consultation with schools in the immediate vicinity.
Closure Vlotbrug 't Zand
During this period, Vlotbrug 't Zand will be closed to motorised traffic to prevent cut-through traffic and bridge breakdowns. Traffic will be diverted via the indicated diversion routes. Pedestrians, (moped) cyclists, emergency and emergency services and agricultural traffic (up to 9 tonnes) will be able to cross the bridge. Access to the bridge will be regulated by barriers and traffic controllers.
Other work
Traffic on the N9 between De Stolpen and Den Helder should expect traffic disruption and extra travel time from 6 to 16 May. During this period, repairs to the Koegra Tunnel in the N9 will take place. Traffic towards Den Helder will be diverted via the N248, N249 and N99 and should expect extra travel time of between 15 - 30 minutes. Traffic towards Alkmaar and emergency services will not be affected.
More information
More information about the renovation of the Kooybrug can be found on the project site: www.rws.nl/kooybrug. Here you will find a complete overview of all phases and (night) closures including diversion routes. Or take a look at the ConstructionApp.