Project

A4 Delft – Schiedam

First Honey Highway of Europe

For the A4 Delft–Schiedam, ZJA collaborated with Bosch Slabbers and the A4ALL consortium on the careful integration of the seven-kilometre motorway into the Midden-Delfland landscape. By placing the road partly below ground level and partly in a tunnel, its impact on the open polder landscape is kept to a minimum.

 

Out of sight, sound and smell

The A4 Delft–Schiedam cuts straight through the natural and polder landscape of Midden-Delfland, with its pollard willows, black-tailed godwits, sheep and ditches. In this open landscape, anything that rises above the road or extends beyond its profile is highly visible.

To reduce the road’s visual impact and noise levels, the A4DS is partly semi-sunken, partly fully sunken and partly enclosed in a tunnel. In some sections, the road lies up to six metres below ground level. ‘Out of sight, sound and smell’ is the motto of the A4DS route decision.

Hidden in the landscape

A motorway through the countryside is obviously difficult to conceal. Not just because of vehicles producing noise and emissions or because the motorway is a vast element, but also because a motorway involves a vast schedule of requirements influencing an area well beyond the motorway itself.

The plan is characterized by a strong geographical division between north and south: the first part of the motorway proceeds on ground level through a recreational area at the perimeter of the Municipality of Delft.

The second and recessed part transects a cultural-historic polder landscape with a bird nesting area, intersecting ecological structures, an extensive recreational programme, a complex water management system, and intersecting small-scale infrastructure.

The third part proceeds through an urban area via a tunnel. Above the tunnel, a sports park with trees and cycle paths is built. 

The Honey Highway

The 7 kilometre A4DS between Delft and Schiedam is a paradise for bees and the first Honey Highway in the world. Organic flower seeds were planted along the A4 to benefit the bee population and counteract possible extinction. This Honey Highway gives bees a new chance to settle on chemically untreated land, typically found adjacent to motorways.

 

The Honey Higway is a collaborative project of initiator Deborah Post, together with Rijkswaterstaat, the Province, the municipality of Midden-Delfland, A4ALL Consortium, businesses, sponsors and citizens, and is likely to see repetition throughout the Netherlands.

Award
Nomination: WAN Awards 2016 (infrastructure)

Architect: ZJA Architects & Engineers
Client: The Dutch Road and Transport Authority
Principal: Consortium A4ALL, consisting of Boskalis, Heijmans and VolkerWessels
Landscape architect: Bosch Slabbers Landscape Architects
Year: 2015

Photographs: Rijkswaterstaat, Marc Blommaert/Heijmans, Jorgen Caris and ZJA Architects & Engineers

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