# Swiss motorway infrastructure projects

> Developing situation record from CLSTR: https://clstr.news/situations/swiss-motorway-infrastructure-projects
> Updated: 2026-11-02T10:37:08.000Z. Sources: 2. Developments: 2.

Switzerland is undertaking several motorway maintenance and expansion projects. On the A1 motorway between Wangen an der Aare and Luterbach, construction to expand the route to six lanes includes scheduled night works from late October through mid December 2026. These works involve traffic management adjustments at the Wangen an der Aare junction and winter preparations on site.

Separately, the Swiss Federal Roads Office (ASTRA) has announced a renovation project for the A3 motorway section between Rheinfelden Ost and Frick. This project aims to repair structures and road surfaces that have been in use since 1974. The renovation intends to improve traffic flow at the Frick junction and enhance environmental protection via drainage system adjustments. Public disclosure of these plans is set to begin in ten neighboring municipalities in mid November 2026.

## Timeline

### 2026-11-02: Switzerland to renovate A3 motorway section between Rheinfelden Ost and Frick

The A3 motorway section between Rheinfelden Ost and Frick in Switzerland will undergo major renovation to update infrastructure, improve traffic flow, and enhance environmental protection.

2 sources. https://clstr.news/cluster/switzerland-to-renovate-a3-motorway-section-between-rheinfelden-ost-and-frick

### 2026-10-20: A1 motorway expansion involves night works in Switzerland

Nightly construction work on Switzerland's A1 motorway between Wangen an der Aare and Luterbach will occur from late October to mid-December 2026 to facilitate a six-lane expansion.

2 sources. https://clstr.news/cluster/a1-motorway-expansion-involves-night-works-in-switzerland

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Cite as: Swiss motorway infrastructure projects. CLSTR, https://clstr.news/situations/swiss-motorway-infrastructure-projects