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Competition: Yangjaegogae Eco-Bridge, Seoul

The Seoul Metropolitan Government has launched an international design contest for a new 11,675 million KRW ‘eco-bridge’ spanning the Gyeongbu Expressway (Deadline: 26 May)

Open to all architects, civil engineers and landscape designs, the competition seeks ‘creative and innovative’ proposals for a new 60m-span crossing, connecting two forested wildlife areas located on either side of the busy 11-lane motorway.

The project – dubbed the Yangjaegogae Eco-Bridge – will provide a new walking route over the impassable road for pedestrians as well as animals such as squirrels and chipmunks. Proposals will be expected to demonstrate harmonious design with strong aesthetic values which promote the coexistence of humans and natural ecology.

Contest site: Yangjaegogae Eco Bridge

Contest site: Yangjaegogae Eco Bridge

Contest site: Yangjaegogae Eco Bridge

According to the brief: ‘The Seoul Metropolitan Government is planning projects such as the Seoul Trails and a connection of park green spaces through a basic plan of a wide-area quantitative and qualitative expansion of park green spaces. This will increase citizens’ access to green areas and enhance the diversity of isolated insects, wild birds, and wildlife.

‘The Yangjaegogae Eco-Bridge site was disconnected from the green network due to the construction of the Gyeongbu Expressway. The purpose of this design competition is not only to provide a roaming route for wild animals through the Eco-Bridge, but also to furnish a living space for various creatures and create convenience for citizens with a connecting walking pass that blends in with the surrounding environment.’

Located in the south of the Korean capital, the Gyeongbu Expressway is a major route connecting the city to Busan. The forested nature reserve sites severed by the motorway are known as Mount Umyeon Urban Nature Park and Maljukgeori Park.

The new bridge will create a link between for the two parkland areas featuring a green channel for both humans and animals. Proposals should be at least 7m wide and feature benches, a rest area and observation point along with suitable soil and vegetation to encourage animals.

Contest site: Yangjaegogae Eco Bridge

Contest site: Yangjaegogae Eco Bridge

Contest site: Yangjaegogae Eco Bridge

Competition judges include Dietmar Feichtinger of Dietmar Feichtinger Architectes, Yonsei University professor Kim Sanghyo and Song Inju, director of safety and environmental research at The Seoul Institute. The official languages are English and Korean.

The overall winner will be first in line for a 521 million KRW contract to deliver the structure. A second place prize of 20 million KRW, third place prize of 15 million KRW, fourth place prize of 10 million KRW and fifth place prize of million KRW will also be awarded.

How to apply

Deadline

The registration deadline is 26 May and submissions must be completed by 12 June.

Contact details

Kim Yun Kyoung
Urban Space Improvement Bureau of Seoul Metropolitan Government

Tel: +82-2-2133-7626 , +82-70-7723-3265

Visit the competition website and select English in top left corner for more information

Vancouver Land Bridge case study: Q&A with Johnpaul Jones

The partner at Jones & Jones discusses lessons learned designing an ecologically friendly bridge for Vancouver, Canada

Johnpaul Jones

Johnpaul Jones

Johnpaul Jones

How did your Vancouver Land Bridge project create a new piece of green infrastructure for the city?

The Vancouver Land Bridge reconnects a National Park destination, historic Fort Vancouver, and its historic environment to the shoreline of the Columbia River. It is a river lifeline that shortens a three-mile drive to a green trail of about a quarter of a mile. It is an important connection for walking, jogging and bicycling, and an interpretive landscape, parklike amenity and a tourist destination. The Land Bridge’s landscape reinterprets this history of the site, when the people were vitally connected to the river. The Chinook tribes travelled along the lower Columbia River, where two historic trails met the shore near the site of Fort Vancouver, a place for meeting and trade. Today, over a million people a year visit the historic fort and learn about the bridge’s connection to the waterfront, to the prairie landscape and to the historic waterfront trails. The Land Bridge has helped bring a rediscovery of the beauty of the Vancouver landscape and river views with a design that embodies the force and presence of nature.

Vancouver Land Bridge by Jones & Jones

Vancouver Land Bridge by Jones & Jones

Source: Image by Bruce Forster

Vancouver Land Bridge by Jones & Jones

Which architectural, material, sustainable and other methods did you harness in your design?

The Vancouver Land Bridge is designed to use only captured rainwater. Everything that is not captured by the planting beds runs into a swale and gutter system along the pathway that feeds into a rain garden and a cistern for irrigation. A well provided water for the start-up and stands by for drought conditions. To create a native landscape on the bridge, the design team referred to the notes in the journals of Lewis and Clark, who left drawings and descriptions of many plants. More than 100 species are included among the plantings on the Land Bridge, all of which are native to the region.

Vancouver Land Bridge by Jones & Jones

Vancouver Land Bridge by Jones & Jones

Source: Image by Jones & Jones

Vancouver Land Bridge by Jones & Jones

What advice would you have to contest participants on designing a new eco-bridge for Seoul?

The Land Bridge goes beyond the brief; it restores a natural landscape and pulls it over the highway. It is also a step toward healing a cultural landscape. Just like the Vancouver Land Bridge, the new eco-bridge for Seoul should be an opportunity to help connect people to each other and to the natural landscape.

Vancouver Land Bridge by Jones & Jones

Vancouver Land Bridge by Jones & Jones

Source: Image by Bruce Forster

Vancouver Land Bridge by Jones & Jones

Salford Meadows Bridge case study: Q&A with Silvia Kuhle

The partner at Standard Architecture discusses lessons learned designing a new green bridge for Salford, England

Silvia Kuhle

Silvia Kuhle

Silvia Kuhle

How will your Salford Meadows Bridge project create a new piece of green infrastructure for the city?

Our bridge proposal connects parkland to existing elements of infrastructure, and its cladding of growing vines makes it a visual extension of the park. We placed the city-side landing where it meets the most traffic, rather than simply spanning straight across the river. The existing bus stop and river walk entry are enveloped at the city side, making this landing a node of activity. The vine-covered bridge engages passers-by as they move along the pavement, inviting pedestrian traffic inside. By giving the bridge path volume and cladding it with greenery, we created a waypoint and landmark, as means to announce the green space that’s just across the River Irwell.

Salford Meadows Bridge by Standard Architecture

Salford Meadows Bridge by Standard Architecture

Salford Meadows Bridge by Standard Architecture

Which architectural, material, and other methods did you harness in your design?

Often there’s a tendency to treat bridges as merely a structural challenge, and to make them uniform in character. In our case the two sides of the river were very different, so we looked for ways the bridge could respond to this difference. Our solution was to engage nature as a cladding material. While the steel lattice shell serves the structural function of stabilising the walkway, we saw it more as way to invite nature to participate in developing the bridge’s long-term character. The materiality of the lattice structure is consistent from end to end, but we undulated its section and allowed living vines to cover the structure from one end. This differentiates the landings and gives the meadow entry point a different character from the urban entry point. By growing vines over the lattice, the envelope will slowly change over time and more frequently with the seasons.

Salford Meadows Bridge by Standard Architecture

Salford Meadows Bridge by Standard Architecture

Salford Meadows Bridge by Standard Architecture

What advice would you have to contest participants on designing a new eco-bridge for Seoul?

Create a multidisciplinary team from the start. For us the exchange of ideas and critical dialogue amongst the team members pushed us to imagine something new. The design meetings with Buro Happold helped us to clarify our intentions and refine the design beyond what we could have done alone.

Salford Meadows Bridge by Standard Architecture

Salford Meadows Bridge by Standard Architecture

Salford Meadows Bridge by Standard Architecture