Press Release


9 June 2020



IABSE Awards 2020

The International Association for Bridge and Structural Engineering (IABSE) is pleased to announce the Laureates of the IABSE Awards 2020.



The IABSE Outstanding Structure Award (OStrA) was established in 1998. It is one of the highest distinctions awarded by IABSE and recognises, in different regions of the world, some of the most remarkable, innovative, creative, or otherwise stimulating structures. Sustainability and respect of the environment is also an important factor. This Award recognises the most remarkable, innovative, creative or otherwise stimulating structure completed within the last few years. The Awards are restricted to a maximum of one Award per year. The Outstanding Structure Award Committee chaired by Naeem Hussain.


Winner: Hong Kong Zhuhai Macao Bridge, China


Outstanding Structure Award (OStrA) 2020 is presented to the Hong Kong Zhuhai Macao Bridge, China, ‘It is the world’s longest sea-crossing link and consists of reclamations, artificial islands, immersed tunnel, marine viaducts and cable-stay bridges. It can be seen from land, sea and air and its design has been driven by aesthetics, environmental, engineering and durability aspects.



At 55km, Hong Kong-Zhuhai-Macao Bridge (HZMB) is the world’s longest sea-crossing link and consists of reclamations, artificial islands, immersed tunnel, marine viaducts and cable-stay bridges. It can be seen from land, sea and air and its design has been driven by aesthetics, environmental, engineering and durability aspects. Significant use has been made of large pre-fabricated elements to achieve quality and construction speed. HZMB will improve connections between 11 cities to create an economic and business hub in the Greater Bay Area and significantly reduce vehicular journey time between Hong Kong and Zhuhai from four to one hour. A number of innovations were implemented in this project:

  • Precast pile caps and pier columns as a single unit lowered onto composite piles with temporary cofferdams supported off the pile caps, permitting connection to the piles to be done in the dry.
  • Combined precast pile caps and pier columns avoided un-friendly wet works in a sea environment and enabled durable and quality construction to be done in reduced construction time.
  • Sail type and dolphin type towers for Jiuzhou and Jianghai bridges respectively are stiff in the longitudinal direction and eliminated the need for intermediate back span anchor piers in Jiuzhou Bridge and gave the required stiffness for the central tower of Jianghai Bridge.



Type of structure:

Hong Kong Zhuhai-Macao Bridge

Date of completion:

June 2018


Hong Kong Zhuhai and Macao, China


Hong Kong-Zhuhai-Macao Bridge Authority (Mainland Section), Highways Dept. Hong Kong

Structural Design & Contractor:

Short span marine viaduct + Jiuzhou Navigation Bridge

Contractor: China Major Bridge Engineering Co. Ltd (MBEC)

Designer:  China Railway Major Bridge Reconnaisance & Design Institute (BRDI) + Halcrow (UK)

Concept Designer: Arup

Long span marine viaduct + Jianghai and Qingzhou Navigation Bridges

Contractor: CCCC First Harbour Engineering Co. Ltd + Guangdong Changda Highway Engineering Co. Ltd Designer: Highway Planning and Design Institute HPDI (China) + Chodai (Japan)

Immersed tunnel and artificial islands

Contractor: China Communications Construction Company Ltd (CCCC)

Designer: HPDI (China) + STEDI (China)

Hong Kong Link Road Marine Viaduct

Contractor: Bouygues + Dragages + VSL + China Harbour JV

Designer: YWL Engineering Pte Ltd. and Mott MacDonald Hong Kong Ltd.

Concept Designer and Employer’s Engineer: Arup



The Finalists 2020 are:


  1.  Cheonsa Bridge Korea


The Cheonsa Bridge Project was launched in the south-western part of Korea to connect the islands of Amtae and Aphae to develop Sinan County’s diamond-shaped group of islands. The bridge project started in 2009 and was opened in April 2019. The project aimed to improve the living condition of the island’s citizen; to promote regional development by providing transportation and tourism infrastructure; and to accommodate the increase in tourism traffic demand. The bridge has the total length of 7,224m, of which 1,004m is a cable-stayed bridge and 1,750m is a three-pylon suspension bridge. “Angel’s Wing” concept was applied for the bridge. “Angel” when translated to Korean is read as “Cheonsa”, which also means the number 1,004. The concept is appropriate as Sinan is composed of 1,004 islands. The cable-stayed bridge is 1,004m long with two A-shaped pylons. The pylons and cables form a shape of an Angel’s wing. Also the nine bundled cable arrangement and the diamond-shaped tower cross beams were applied to convey the role of the bridge as the entrance gate of Sinan’s nine-island diamond system. The Cheon-Sa bridge is a bridge connecting the islands of Amtae and Aphae of Sinan County, which consists of 1,004 islands, in South Korea. The Cheon-Sa bridge is composed of FCM Pier Table-Anchored Cable-Stayed bridge and 3-Pylon Multi-span Suspension bridge. A variety of structural plans are applied to each cable bridge to ensure the wind safety and improve the structural system’s safety. The Cheon-Sa bridge, which is composed of two cable bridges with distinctive shapes and efficient structures, will be utilized as a tourism resource and a technical indicator of advanced bridge design. Moreover, it will also play a significant role in the development of the region by promoting rapid access to the city from the island area.


Type of structure:

Cheonsa Bridge

Date of completion:

April 2019


Sinan-gun, Jeollanam-do, Korea


Iksan Regional Construction Management Administration, Ministry of Land, Infrastructure and Transport, Korea

Structural Design

DM Engineering & Chungsuk Engineering ENVICO Consultants & Dasan Consultants


Hyundai Engineering & Construction Co., Ltd., Daelim Industrial Co., Ltd.



(2)         Halogaland Bridge Norway



The Hålogaland Bridge with a main span of 1145 meters is the world longest suspension bridge ever built north of the arctic circle. The Hålogaland bridge’s distinctive and recognizable appearance has been achieved by A-towers, unique spatial cable system and main cable anchorage in rock which minimizes the visual and physical impact on the surroundings and unite the structure with the surrounding mountains. The aim has been to create an elegant bridge in respect of the dramatic and beautiful Norwegian landscape and provide the best solution to the local community by unifying all practical needs, environmental issues, safety and aesthetic visions. 


Already dubbed "the most beautiful bridge in the world" by local residents and engineering aficionados alike, the Hålogaland bridge with a main span of 1,145 m is the longest spanning bridge ever built north of the Arctic Circle. Norway’s new Hålogaland Bridge is an example of a principle most architects and engineers seem to agree on; while bridges need to be functional, safe and durable, they should also be elegant and beautiful. When done right, bridges become a symbol of their location and part of the local story and legacy.  The trust given to the design team and the strong relationship with the bridge owner have played a key role to develop an innovative and elegant bridge design with strong architectural expression.  The Hålogaland Bridge design has been developed based on experience gained from design and construction of many reference projects and the developed solutions have been analysed by advanced design tools. A balance between engineering, architecture and cost has been found with the main purpose of creating a recognizable and elegant structure which is not only beautiful, but functional and can stand for more than 100 years. 

Photocredits: Robin Lund-Lysende


Type of structure:

Halogaland Bridqe (Halogalandsbrua)

Date of completion:

9 December 2018


Narvik, Norway


Statens Veqvesen Reqion Nord

Structural Design



NCC (concrete), SRBG China (Steel)




(3)         Samuel De Champlain Bridge Canada



The existing Champlain Bridge is one of the busiest bridges in Canada with some 50 million vehicles and 11 million transit users travelling on the structure each year.  It is estimated that CDN $20 billion in Canada-US trade crosses the bridge annually. The Samuel De Champlain Bridge has been designed and constructed on a very aggressive accelerated schedule to replace the existing bridge that displays serious deterioration. Its spectacular aesthetic and architectural qualities were defined by a Task Force of local experts and were preserved through the Public Partnership design and construction process. Prefabricated steel and concrete elements are used extensively to accelerate construction and to ensure tight geometric control and durability.  The bridge has innovative materials to achieve its 125-year design life, and its sustainability has been recognized with an Envision Platinum Award from the Washington-based Institute for Sustainable Infrastructure. The scope of the Samuel De Champlain Bridge Corridor Project, is one of the largest transportation infrastructure projects underway in North America. The project extends over 8.4 km, and includes: reconfigured highway approaches and interchanges at the East Approach in Brossard; the 3.4 km long Samuel De Champlain Bridge crossing over the Saint Lawrence River incorporating an iconic asymmetrical cable-stayed bridge; major highway connecting ramps at Île des Soeurs extending over 1.0 km that include future proofing works to accommodate a mass transit train station on the island; the new Île des Soeurs Bridge consisting of two four-lane bridges each about 500m long; and; reconstruction and widening (from 4 to 6 lanes) of Autoroute 15 in a dense, highly developed and historically rich urban area of Montréal. In addition to the Samuel De Champlain Bridge and Île des Soeurs Bridge, which together have a combined deck surface area of 190,000 m2 and so, rank as Canada’s largest bridge, the project includes the construction of nineteen overpasses. 

Photocredits: Infrastructure Canada


 Type of structure:

Hiqhway Bridqe (with Liqht Rail Transit Corridor)

Date of completion:

1 July 2019


Brossard-Montreal, Quebec, Canada


Government of Canada.

owner’s engineer: Arup Canada Inc.

Private Partner:  Signature on the Saint Lawrence Group

Structural Design

TYLI-IBT/SLI Joint Venture (joint venture of T.Y. Lin International Canada Inc.,

International Bridge Technologies Canada, Inc., and SNC-LAVALIN Inc.)


Signature on the Saint Lawrence Constructors (partnership of SNC-

LAVALIN Major Project Inc., Dragados Canada Inc., and Flatiron Constructors Canada Ltd.), EBC


Dissing+Weitling/Provencher et Roy



The International Association for Bridge and Structural Engineering (IABSE) founded in 1929, operates on a worldwide basis and deals with all aspects of planning, design, construction, maintenance and repair of civil engineering structures. The mission of IABSE is to exchange knowledge and to advance the practice of structural engineering worldwide in the service of the profession and society. To fulfil its mission, IABSE organises conferences and publishes a high-quality journal, Structural Engineering International (SEI); publishes books reflecting the work of its Technical Groups; creates Working Groups, as required by new needs and technological progress; offers activities within National Groups of IABSE; supports Young Engineers with a programme, and presents annual Awards in recognition.

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Brindarica Bose
Communications and Publications Manager 
Jungholzstrasse 28 
8050 Zurich 



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