Construction site altitude: Stammfahr on the A4 near Cologne from June 22nd!

Construction site altitude: Stammfahr on the A4 near Cologne from June 22nd!

On June 22, 2025, a construction of a comprehensive construction site is expected on the A4 near Cologne, which could significantly influence the traffic volume in the region. Loud News.de The starting sign for these measures takes place today at 9:00 p.m., whereby the construction work with bridge work primarily affects the route from the Frechen-Nord (9b) junction to the Cologne-West (10) motorway junction. The measures last until the early morning of June 23, 2025, 4:00 a.m.

The effects of this construction site can already be felt because the two left lane are blocked and traffic is narrowed on a lane. Experts warn of increased traffic and possible traffic jams. It is advisable to adapt the driving behavior to ensure the safety of all road users.

construction site situation on the A4

But that's not the only construction site that traffic on the A4 could affect by the end of the year. The construction site at the Wiehl valley bridge, which has been going on for some time, also causes difficulties. Here the right lane is closed by December 1, 2034, with the road being narrowed onto a lane. Particular caution is required, since the permissible total weight for vehicles is temporarily limited to 44,000 kg, as traffic situation.de reports.

In addition, drivers on the A4 between Cologne and Olpe have to expect further restrictions. Bridge works run between Eckenhagen and the Hasbacher Höhe rest area, which will also continue until August 15, 2026. The work ensures a narrowing of the road and represent an additional challenge for road users.

traffic jam in North Rhine-Westphalia

North Rhine-Westphalia has established itself as a traffic jam stronghold in Germany. According to rp online , the high density of construction sites and the increase in resident vehicles as well as goods transport is a recipe for recurring traffic problems. Construction sites are frequent traffic jams, especially in connection with bridge work, which often not only sporadically, but remain over a longer period of time.

The recommendations of traffic observers are clear: travelers should consider alternative travel days, especially during the holiday season, when traffic jams are the order of the day. The first weekend after the holidays is particularly critical. Many causes of traffic jams, such as interaction from construction sites, accidents and the associated diversions, are often not predictable and increase stress on the streets.