The Tram Affoltern Project: A Controversial Step for Zurich’s Public Transport

The proposed Tram Affoltern project in Zurich has sparked significant debate as the city prepares for a public vote on June 14, 2026. The initiative, aimed at addressing growing transportation demands in the northern district of Affoltern, faces both strong support and notable opposition. At the heart of the discussion are the project’s financial structure, environmental impact, and the role of local and cantonal authorities.

Project Overview and Key Details

The Tram Affoltern project involves the construction of a four-kilometer tram line along the Wehntalerstrasse, featuring seven stations from the former radio studio to Holzerhurd. Key components include:

• Cost: CHF 562 million total, with CHF 465 million allocated for the tram infrastructure.
• City Contribution: CHF 159 million, split into CHF 99 million for “Renewal and Development Measures” and CHF 60 million for the cantonal transport fund.
• Environmental Impact: 564 trees on municipal land and over 100 on private property will be felled, replaced by 851 new trees.
• Infrastructure Upgrades: 6.6 meters added to road space, dedicated bike lanes, and modernized urban design.

The project, which has been in planning for 15 years, is framed as a “generation project” by supporters, emphasizing its role in enhancing public transport reliability and reducing car dependency. Stadtrat Michael Baumer (FDP), a key proponent, highlights its importance for Zurich’s northern district, which is projected to grow from 27,500 to 32,000 residents by 2040.

Support and Opposition

The initiative enjoys broad political backing, with over 300,000 residents in Zurich relying on public transport. The overpartisan committee, including parties like FDP, GLP, and the SP, underscores the project’s environmental benefits and its role in alleviating pressure on existing transit networks. The Verkehrsbetriebe Zürich (VBZ) estimates that the tram will cut travel time from Zehntenhausplatz to the main station to 17 minutes.

Despite this, the project faces criticism. Local businesses along the Wehntalerstrasse fear economic losses due to road expansions and parking reductions. Over 100 objections were raised during the 2024 public consultation phase, with concerns about disrupted commerce and green space reduction.

The political opposition includes the SVP and AL, which criticize costs and parking cuts. Surprisingly, the Greens, typically aligned with public transport initiatives, have also voiced concerns. They argue the project undermines the canton’s responsibility for public infrastructure and question the city’s decision to preemptively cover CHF 60 million in cantonal expenses.

Controversies and Key Concerns

The controversy centers on the project