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Altonas A7 Autobahn Tunnel Greenery Project to Cost Over 100 Million Euros
Hamburg, October 3 – The extensive greenery project planned for the A7 Altona autobahn tunnel is projected to cost over 100 million euros, according to a Senate document obtained by the “Hamburger Abendblatt.” The project, which includes 330 allotments, a meadow strip, and various parks, is not expected to be completed until 2037, despite the tunnel itself being finished in three years.
The Senate discussed the project today, highlighting the significant investment and the long timeline for its realization. The Altona tunnel, stretching over 2,000 meters, is the longest of Hamburg’s three autobahn tunnels. The goal is to transform the concrete structure into a vibrant green space, similar to the already greened Schnelsen and Stellingen autobahn tunnels.
Three Distinct Green Zones Planned
Hamburg plans to create three different green zones across 19 hectares: allotments, a meadow strip, and parks, all connected by a dedicated cycling and pedestrian path. This green axis is designed to make residents forget that an eight-lane autobahn runs beneath their feet.
The cost of this ambitious project is substantial, with the greenery alone estimated at 100 million euros. Additionally, eight million euros will be allocated to fund seven new administrative positions required for the project’s oversight and management. This information was detailed in a Senate document, as reported by the “Hamburger Abendblatt.”
Long-Term Vision: Completion by 2037
Despite the A7 Altona tunnel itself being scheduled for completion in three years, the park and green spaces will take considerably longer to establish. The full realization of the green zones is anticipated by 2037. The Bürgerschaft (Hamburg Parliament) must still approve the plans for the implementation to proceed.
The project follows the successful model of the Schnelsen and Stellingen autobahn tunnels, where bushes and meadows now thrive on the concrete structures. The Altona project aims to provide similar environmental and recreational benefits to the local community.
Context and Broader Impact
This development is part of a larger effort in Hamburg to integrate urban infrastructure with green spaces, enhancing the quality of life for residents and contributing to urban biodiversity. The creation of such extensive green areas over major transportation arteries is a complex undertaking, requiring significant planning, funding, and a long-term vision.
The discussion in the Senate today underscores the city’s commitment to these large-scale urban development projects, even with their considerable costs and extended timelines. Once completed, the Altona green spaces are expected to offer significant recreational opportunities and improve the urban landscape for thousands of Hamburg residents.
The news comes amidst other significant developments in Hamburg, including the insolvency of Galeria stores, ongoing efforts to combat crime, and international human rights concerns. However, the focus today remains on the future of urban planning and green infrastructure in the city.
Source: NDR 90,3 | NDR 90,3 Aktuell | 10.03.2026 | 12:00 Uhr
