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Construction work on the A23: traffic chaos expected until December 2025!
Current construction sites on the A23 near Kaisermühlen: Night closures from July 2025, work on the retaining wall until December.
Construction work on the A23: traffic chaos expected until December 2025!
From July 21, 2025, extensive construction work will begin in Vienna on the A23 Südosttangente, which will pose challenges for drivers until December 2025. The work focuses on rebuilding the retaining wall in the direction of Altmannsdorf. Given the numerous vehicles that use the A23 every day, this is an important measure to ensure road safety. Loud 5min.at The new retaining wall will be equipped with a protective shell and an upper concrete finish.
The A23 is one of the busiest motorways in Austria and has over 230,000 vehicles per day, which represents an enormous traffic load. That's why those responsible decided to carry out the work at night. As well as today.at As described, all lanes are maintained during the day, while at night between 10 p.m. and 5 a.m. the highway is narrowed to one lane. In addition, the exit to the distribution circle from Kaisermühlen will be closed.
Details about the construction work
The infrastructural intervention will be implemented in several phases to keep the disruption to drivers as low as possible. Preparatory work has been underway in the southbound direction since March 2025, with the hard shoulder being used as an additional lane to divert traffic to the right. Independent measures are intended to help make orientation easier during the construction site. Worth mentioning is the planned winter break from October 2025 to March 2026, followed by renovations of the junctions at the Prater and Handelskai junctions, so that the entire measures should be completed by the end of August 2026.
The A23 is not only an important traffic artery, but also an intersection between the southern and eastern motorways. Construction work will be organized during the nights to minimize congestion. Traffic will be roughly divided into three construction phases, with the exit towards Handelskai being closed during the entire construction period.
Traffic volume and traffic jams
The traffic jam on the A23 is a well-known phenomenon, especially at the Inzersdorf junction, which is often affected at rush hour. The Hansson curve is also notorious for its lack of clarity and high accident rate. Not to be forgotten are the recurring traffic disruptions at the Prater junction, where the A4 meets the southeast bypass. Targeted traffic management should ensure that progress is as smooth as possible during this time.
The work is necessary to make Vienna's transport infrastructure future-proof. Drivers should be prepared and keep the roadworks on the A23 in mind to avoid traffic jams. Stay informed with the latest traffic updates staumelder-karte.at.