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Utilizing Airspace for Affordable Living Above Urban Motorways

Authors:
Holly Davidson, Szymon Smyk, Cameron Edwards
Utilizing Airspace for Affordable Living Above Urban Motorways

Project in-detail

An inhabited bridge above Berlin's motorways transforms unutilized airspace into affordable housing, enhancing urban connectivity while integrating sustainable living solutions.
5 key facts about this project
01
Utilizes unowned airspace above a major motorway for housing.
02
Incorporates pre-fabricated units to streamline construction.
03
Features a dual-function design combining residential and transport systems.
04
Integrates energy efficiency through harnessing kinetic energy.
05
Encourages community interaction with shared communal spaces.

"Bridging the Gap" is situated in Berlin and aims to tackle urban housing issues by utilizing space above major motorways. The design centers on creating an inhabited bridge that provides affordable housing while enhancing connectivity in the city. This approach transforms overlooked areas into livable spaces, integrating them into the existing urban environment.

Design Concept

The main idea is to combine two functions: serving as a bridge for both pedestrians and vehicles while also providing residential units. By making use of the airspace over the busy motorways, the design addresses the problem of isolation and connects parts of the city that have been separated by infrastructure. This model not only meets the need for housing but also ensures that these homes contribute to the overall urban layout.

Construction Approach

The construction is planned in a systematic manner that begins with delivering materials, such as pre-fabricated units and bridge trusses, to the site. The process is designed to minimize disruption to traffic. First, the motorway is closed for the installation of structural elements, which allows for safe and efficient work. Once the bridge is in place, the road reopens, ensuring that mobility continues beneath the new structure.

Environmental Integration

Sustainability plays a crucial role in the design. The bridge aims to capture heat and kinetic energy generated from the traffic below. By using these energy sources, the project reflects a commitment to environmentally responsible practices. This integration improves the efficiency of the living spaces and supports broader sustainability goals.

The design promotes interaction among residents through shared spaces while also respecting their need for privacy. It takes previously unused urban areas and turns them into functional environments where people can live and interact comfortably. This focus on livability ensures that the inhabited bridge is not just a place to stay but a community within the city.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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