Hannah MacFarlane and I recently entered a competition to design a new 'green bridge' across the M73 Motorway near Easterhouse. The competition was run by the Glasgow Institute of Architects. Unfortunately we didn't make the final shortlist, however here was our competition entry.
Located to the North-East of Glasgow, the 7 Lochs Wetland Park is ideally located to become an important recreational facility on a national scale, particularly to the existing and future communities of Easterhouse. Of vital importance to its success is the connection across the M73 motorway. Existing connections here are of poor quality to both pedestrians and habitats – pedestrian paths are broken and the under-pass to the South is overgrown and disused. As such, the M73 creates both a physical and psychological barrier to overcome.
Through our studies of the site, we believed it was important to connect our link over the M73 to Drumpellier Park directly into the existing community of Easterhouse to encourage ownership, with the proposed Community Growth Areas being able to link in. The link would provide the opportunity for casual interactions, encouraging the successful integration of the new communities. We have been inspired by the poetic notion of ‘the line through the landscape’, which manifests itself in several ways; a dismantled railway, an overgrown canal, a line of trees. Taking this inspiration forward, we propose extending one of these lines – a treeline through Commonhead Moss – across the M73 as a ‘green pedestrian spine’ – a new green finger providing a direct and visible connection to Drumpellier Country Park.
We recognise the importance of the strategy of creating ‘Gateway buildings’ from where users begin their journey and propose to enhance this: the Spine offers a direct route from Easterhouse to the Visitor Centre allowing users to begin their journey from this gateway building, whilst also offering connections to Principle and Secondary routes, allowing users to branch out to these at key points, and is located in an area of maximum opportunity, where Woodland, Grassland and Wetland habitats overlap, and with a scenic journey through Commonhead Moss. As part of a wider strategy, we propose distinct identities for the routes through the Wetland Park with the subtle application of materials to signage, lighting, seating and handrails – timber to Core Paths, stainless steel to Secondary Paths and mild steel to the Spine – to upgrade the existing connections and to create a clear yet subtle way-finding strategy in a minimised and complimentary style, allowing nature to come to the foreground.
Our proposal for a new bridge as a crossing point is itself a physical extension of the treeline and is conceived in three parts – a ‘place to pause’ offering users a place to reflect with views out to Commonhead Moss, ‘condensed habitat bands’ which offer a flexible system for the integration of grassland, woodland and wetland habitats as well as a meandering pedestrian path across the M73, and a ‘viewing tower’ clad in perforated mild steel, which clearly marks the location and identity of the crossing point in the landscape and from the motorway, and allows for dramatic views across the surrounding wetland park.
The bridge fully exploits its location in the area where the three habitat types overlap to physically extend these across the motorway. Through the use of a deep structure of prefabricated inverted T-sections formed from the recycled steel of the surrounding dismantled railway lines, these are filled and planted with various native tree-types, grassland and wetland plant types to create a continuous habitat network across the M73, whilst a boardwalk path weaves between these offering a clear pedestrian and cycle route. Lighting is integrated at low-level to minimise visual impact and create a safe environment at night. Through the use of a modular and adaptable construction system, the bridge can be easily erected with minimal disruption to the traffic of the M73.
As a result, our proposal for a ‘line through the landscape’ offers a direct, adaptable and safe habitat link and wider identity for the 7 Lochs Wetland Park, fostering a greater relationship between greener communities and the environments within which they live.
See the GIA website to have a look at all the great competition entries: http://gia.org.uk/our-work/competitions/architecture-people-and-places