[CLSTR]
< Back to situations

Monitor this situation.

[SITUATION] · [ACTIVE] · [INTERNATIONAL]

4 clusters · 8 sources · 23 days · First seen · Last updated

Swiss motorway maintenance and closures

Overview

In September 2026, several nighttime motorway closures and construction projects are underway in Switzerland to facilitate infrastructure maintenance and safety upgrades.

The A2 motorway between Sissach and Eptingen is undergoing closures as part of a long-term project (2022–2027) to renew signaling and video equipment. Additionally, intensive resurfacing work on the Basel Osttangente (A2) is scheduled to continue until October 5, 2026. Recent weekend work near the Schwarzwald tunnel caused significant congestion, leading authorities to divert traffic from Germany onto local roads; some travelers experienced delays of up to 45 minutes.

Concurrently, the Swiss Federal Roads Office (ASTRA) has announced nighttime closures on the A3 motorway’s North Tangent in Basel. From September 21 to October 9, the approximately 3-kilometer section between Basel-Euro Airport and the Wiese junction—which includes the St. Johann and Horburg tunnels—will close between 20:00 and 05:00, Monday through Friday. These works are required to decommission an old smoke detector system following the installation of new linear heat detectors. During these hours, traffic will be diverted through the local road network.

New emergency repairs have been scheduled for the A2 motorway following a traffic accident that damaged the central lane guidance system at the east portal of the Schweizerhalle Tunnel. Full closures in both directions between Hagnau and Pratteln are set for the nights of October 5 through October 7, from 22:00 to 05:00. A subsequent single-direction closure toward Zurich/Luzern will occur from October 7 to October 8. Traffic will be diverted via Rheinfelderstrasse through an industrial area, though authorities noted repairs remain weather-dependent.

Entities

Federal Roads Office (ASTRA) · Malojastrasse · Basel · Pratteln · A2 motorway

Timeline

  1. [INTERNATIONAL] 2 sources
    A2 motorway closures scheduled for Schweizerhalle Tunnel repairs

    The A2 motorway near the Schweizerhalle Tunnel will undergo nighttime closures between October 5 and October 8 for repairs to a damaged lane guidance system following an accident.

  2. [INTERNATIONAL] 4 sources
    A2 motorway in Basel faces ongoing construction and traffic delays

    Resurfacing work on the A2 Basel Osttangente in Switzerland continues, with intensive construction expected to last until October 2026, causing periodic traffic delays and diversions.

  3. [BUSINESS] 5 sources
    A3 motorway in Basel to face nighttime closures

    The A3 motorway's North Tangent in Basel will face nighttime closures from September 21 to October 9, 2026, for the removal of an old fire detection system.

  4. [INTERNATIONAL] 3 sources
    Switzerland A2 motorway to face night-time closures

    Night-time closures are scheduled for the A2 motorway between Sissach and Eptingen in September 2026 to facilitate safety equipment upgrades.

Sources

bibo.ch · kantonspolizei.ch · onetz.de · polizei.news · polizeinews.ch · polizeiticker.ch · schweiznews.ch · weiden24.de

This summary has been updated 2 times: see revision history