The Netherlands

West 8 urban design & landscape architecture b.v.

Nico Koomanskade 1021
3072 LM Rotterdam
The Netherlands

+31 (0) 10 485 5801


West 8 Brussels urban design & landscape architecture bvba

Waaienberg 123
1745 Opwijk

+31 (0) 10 485 5801

United States

West 8 urban design & landscape architecture p.c.

2133 Arch Street, Suite 101
Philadelphia, PA 19103
United States of America

+1 347 371 2252

Re-stitching the City

Groene Loper, Maastricht, NL

The removal of traffic and creation of new homes, restoring historic and ecological connections, and providing the city with a direct and safe connection to green space and nature.

The stacked design of the tunnel creates space for urban development on both sides of the Groene Loper. Over the next few years, over a thousand homes will be built in different phases in a wide variety, both in terms of typology and shape. The plan aims for a high-quality avenue environment inspired by Maastricht’s old canals.

The construction of the King Willem-Alexander Tunnel in Maastricht increased the value of homes within a radius of one kilometre by a combined 220 million euros. This increase in value comes on top of the general increase in house prices.


The integrated cooperation enabled the impact on the surrounding area to remain minimal during construction while seeking maximum gains for the city in the long term. For instance, excess sand was used to build a park hill and a water basin was given a second life as a pond. In doing so, The Groene Loper not only solved a major technical issue but also gave extra ‘gifts’ back to the city.

Healing the city of

With the planting of 2,000 trees and the creation of a central part for walking and cycling, this linear strip is now able to unite rather than divide.

The two entrances to the city from the tunnel are articulated with green space. These traffic intersections have been given their own topography and planted with Italian poplars to create a green arrival.

Consortium Avenue2 (Ballast Nedam, Strukton) and Projectbureau A2 (Rijkswaterstaat, Provincie Limburg, Gemeente Maastricht en Meerssen)

Ballast Nedam, Strukton, Arcadis, Humble Architecten, dGmR, in collaboration with Bex* Communication

© West 8, © Jeroen Musch, © Fred Berghmans, and © Aron Nijs