{"data":{"news":{"items":[{"title":"Mr.","date":"2025-06-11 00:02:32","id":5882,"author":"1","blurb":"","blurb_image_uid":"https://dxfpracgmlczp.cloudfront.net/2025/06/1749555709031_1747813473000_Aerial view of T5 copy.jpeg","blurb_expanded_image_uid":null,"article":"\n\t\n\n\n

A joint venture between Penta-Ocean Construction Co Ltd and Koh Brothers Building & Civil Engineering Contractor (Pte) Ltd has secured a S$999 million contract from Singapore’s Changi Airport Group (CAG) to build the intra-terminal tunnels at Terminal 5 (T5). Construction of the project is expected to take more than four years.

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These intra-terminal tunnels will serve as underground connections within T5, supporting the efficient transfer of passengers and baggage across the terminal’s concourses, while also facilitating the routing of common utilities.

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The tunnel system comprises a series of sub-tunnels that will house key infrastructure to support efficient airport operations. They include the automated people mover system and baggage handling system, as well as a common services tunnel (CST) which will contain dry and wet utilities such as electrical power, communication systems and water services. The works also comprise a ventilation building that supports the CST, and provisions for a future underground infrastructure tunnel.

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“The award of the T5’s intra-terminal tunnel works marks another important development in the construction of T5 and the wider Changi East project. These tunnels will enable the smooth and efficient movement of passengers, baggage and services,” explained Ong Chee Chiau, CAG’s managing director for Changi East.

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“We are pleased to partner two highly reputable construction companies on the project – Penta-Ocean, recognised for its extensive expertise and technical proficiency in undertaking large-scale projects such as land reclamation within Singapore and internationally; and Koh Brothers, a key player in shaping Singapore’s infrastructure development with a strong track record in delivering complex, large-scale projects locally.”

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T5 is part of the larger Changi East development that includes Changi Airport’s third runway, as well as cargo complexes and other supporting aviation and ground transport infrastructure. The groundbreaking ceremony of T5 was held last month, with Phase 1 slated for completion in the mid-2030s.

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Image: Changi Airport Group

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SJ Group, Arup and Mott MacDonald are collaborating as the engineering consortium on Singapore’s Changi Airport Terminal 5 (T5) project to deliver full engineering consultancy services for the design of the main terminal building, satellite terminal building, ground transportation centre and the primary landside roadways.

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This major development broke ground on 14 May 2025, officiated by Singapore’s Prime Minister and Minister for Finance Lawrence Wong. T5 will be a mega terminal, set to strengthen Changi Airport’s status as a leading air hub. “The construction itself of T5 is a significant, complex engineering project,” said Mr Wong at the groundbreaking ceremony.

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T5 is located within the 1,080-ha Changi East development that is designed to withstand extreme weather and climate change effects. To manage stormwater during high tide and handle intense rainfall from extreme storms, the airfield features an elevation of 5.5 m above sea level, and the aircraft taxiways are sloped to allow rainwater to drain off effectively.

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In a separate consortium comprising SJ, Arup, Mott MacDonald, as well as Changi Airport Planners and Engineers, they serve as the master civil consultants, delivering the infrastructure design at the landside and airside areas outside of the T5 buildings. These include taxiways, aircraft parking stands, roadways and drainage systems, plus the connections for utilities such as power, water, gas, fuel and telecommunications to the T5 buildings.

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SAA Architects, an SJ company, is the architectural qualified persons for Headhouse 5A and Terminal 5B. Drawing on lessons learnt from the Covid-19 pandemic, T5 will be designed with the flexibility to operate as smaller sub-terminals when needed, with spaces that could be converted for the handling of contingencies, such as health testing operations or the segregation of high-risk passengers.

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T5 will be connected to existing terminals at Changi Airport, enabling the airport to operate as an integrated air hub. Capable of accommodating about 50 million passengers annually, its first phase is slated to open in the mid-2030s.

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T5 will also be a Green Mark Platinum Super Low Energy building, harnessing clean energy and using building management systems with innovative and efficient systems design to reduce the carbon footprint of Changi Airport. The terminal’s rooftop solar system, which would be one of the largest in Singapore, can potentially generate enough energy to power up about 20,000 four-room HDB flats for a year.

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For the first time, T5 will see Changi Airport house a ground transportation centre integrating train, bus, taxi and other transport services, enhancing Changi Airport’s connectivity to the rest of Singapore.

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All images: Changi Airport Group

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Construction of Singapore’s Changi Airport Terminal 5 (T5) has begun, with a groundbreaking ceremony held on Wednesday (14 May) to mark this significant milestone. The first phase of the terminal is expected to open in the mid-2030s, capable of handling about 50 million passengers annually.

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As Asia Pacific is projected to be among the fastest growing air travel markets over the next two decades, the additional capacity at T5 will enable Singapore to ride on the long-term growth of aviation in the region and beyond.

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T5 is located in Changi East, a 1,080-ha development which also includes the Changi East Industrial Zone (CEIZ) and the Changi East Urban District (CEUD). The CEIZ is aimed at augmenting Singapore’s position as a leading aircraft maintenance and integrated logistics and air cargo hub in the region, while the CEUD will serve as a vibrant business and lifestyle destination located at the doorstep of T5.

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According to Changi Airport Group (CAG), Changi East is designed to withstand extreme weather and climate change effects. The airfield has an elevation of 5.5 m above sea level, and the aircraft taxiways are sloped to allow rainwater to drain off. The airfield drainage system is engineered to manage stormwater effectively during high tide especially with rising sea levels, and handle intense rainfall from extreme storms.

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The design of T5 was proposed by a consortium led by KPF Associates, in partnership with Heatherwick Studio and architects61. The design work for T5 was paused in 2020 due to the pandemic and resumed in 2022. Earlier this month, CAG awarded the contracts for T5 substructure and airside infrastructure works.

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Inspired by Singapore’s unique blend of nature and city, T5’s design concept is characterised by overlapping curved roofs with varying heights, shared CAG. The ‘roof leaves’ break the mega terminal building into smaller spaces that are more human scale. Combined with natural light and landscaping at appropriate spaces, the terminal will have the familiar cosy, yet uplifting, feel that Changi is known for.

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CAG further highlighted that T5 will be a Green Mark Platinum Super Low Energy building, which is more energy-efficient. It will be powered by more clean energy to reduce the carbon footprint of Changi Airport, and be equipped with building management systems that feature innovative and efficient systems design. The terminal’s rooftop solar system, which would be one of the largest in Singapore, can potentially generate enough energy to power up about 20,000 four-room HDB flats (Singapore’s public housing) for a year.

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For the first time, T5 will see Changi Airport house a ground transportation centre, bringing together train, bus, taxi and other transport services – enhancing the airport’s connectivity to the rest of Singapore, added CAG. Plans are also in progress to extend both the Thomson-East Coast Line and the Cross Island Line to T5, to connect it to the city centre and other major hubs.

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In addition, T5 will offer the possibility of enhanced air and sea connectivity, including convenient connections to neighbouring destinations via ferry services. When completed, T5 will be linked to existing terminals at Changi Airport, so that the airport can operate as a single integrated air hub.

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All images and video: Changi Airport Group

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Singapore’s Changi Airport Group (CAG) has awarded the contracts for substructure and airside infrastructure works at Changi Airport Terminal 5 (T5), valued at about S$3.8 billion and S$950 million respectively.

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The substructure contract has been awarded to a joint venture between China Communications Construction Company Limited (Singapore Branch) (CCCC) and Obayashi Singapore Pte Ltd. It comprises the construction of the foundation and basements of the T5 main passenger terminal and ground transportation centre, as well as a portion of the tunnels linking T5 and Terminal 2 (T2). The substructure site covers about 140 ha with a basement depth of up to 28 m, equivalent to about 5,200 Olympic-sized swimming pools put together.

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A separate contract has also been awarded to Hwa Seng Builder Pte Ltd for airside infrastructure works. These include the development of remote aircraft stands, connecting taxi lanes and ancillary support buildings.

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“The appointments of the contractors for substructure construction and airfield works bring us closer to the start of T5’s construction. With a planned capacity of 50 million passengers annually, T5 represents one of the most complex construction projects in Singapore,” said Ong Chee Chiau, CAG’s managing director for Changi East.

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“Both CCCC and Obayashi Singapore bring a wealth of experience in civil engineering, construction and project management, with a strong track record in delivering large-scale infrastructure projects both in Singapore and internationally.

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“Hwa Seng Builder brings valuable local expertise and deep familiarity with Changi Airport, built through the successful delivery of various past projects. Together with our partners, we will ensure that the high standards which define Changi Airport can be replicated or even surpassed in the development works of T5.”

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T5 is part of the larger Changi East development that includes Changi Airport’s third runway, as well as cargo complexes and other supporting aviation and ground transport infrastructure. The construction of T5 will start in the first half of 2025, and is expected to be completed in the mid-2030s.

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Image: Changi Airport Group

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