Traffic chaos in Cologne: A559 construction site until November 2025!
Construction site report for the A559 in Porz: Traffic restrictions until November 11, 2025 due to bridge work.

Traffic chaos in Cologne: A559 construction site until November 2025!
In Cologne there will be noticeable traffic disruptions on the A559 in the coming months. As the News.de reported, numerous construction site measures have been underway since May 11, 2025 and will last until November 11, 2025. The focus is on building a new bridge, which will ensure that many commuters have to be patient.
The construction site extends from the Cologne-Gremberg motorway junction to the Cologne-Porz junction in the direction of Cologne-Porz. In this section – 1.83 kilometers long in total – the maximum passage width is limited to 6 meters. This means that increased traffic volumes and congestion must be expected. Commercial traffic and local residents are particularly likely to suffer from these restrictions, as the A559 is one of the main routes in the region.
Details about the construction site
From June 27, 2025 there will also be unilateral closures. These affect both the route from Cologne-Gremberg to Cologne-Porz and in the opposite direction. The closures are planned for the nights of June 27th to 30th, 2025, from 8:00 p.m. to 5:00 a.m. Almost 6 kilometers of route in two sections are at stake here, as 2.67 km and 3.40 km each have to be closed.
The responsible authorities recommend that you pay attention to current traffic information in order to avoid traffic jams. Loud verkehrslage.de There are various sources of danger that arise from construction sites. These include, among other things, the risk of slipping, restricted visibility and additional speed monitoring. Such dangers can pose additional risks for all road users.
Construction site management in NRW
With regard to construction site management, it is important to understand that such measures not only influence traffic accidents, but also need to be strategically planned. Streets.NRW offers various types of construction site management to minimize impact on traffic. A well-thought-out plan is essential, especially for long construction sites like this that last several months.
The extensive work on the A559 is part of broader transport infrastructure projects in North Rhine-Westphalia. It remains to be hoped that the planning will be implemented as effectively as possible and that the disruption to drivers and residents will remain tolerable.