meed-logo

line1 line2 line3
SIGN IN / REGISTER

Traffic drives construction underground

3 April 2025

 

On 14 February, Dubai construction was thrust again onto the global stage when Elon Musk, the world’s richest man, announced plans to explore the development of an underground Dubai Loop transportation system, along the lines of the Las Vegas Convention Centre Loop project in the US.

Dubai has typically made headlines globally by constructing the world’s tallest towers. As the city becomes increasingly congested on the surface, it is taking some of its largest construction projects underground.

With Musk’s backing, the Dubai Loop scheme is the most high-profile tunnelling project launched to date. It involves carving a futuristic transport system underneath Dubai. The initial phase of the project is currently being studied by Dubai’s Roads & Transport Authority (RTA) in partnership with The Boring Company, which is owned by Musk. It will cover 17 kilometres (km) and have 11 stations, with the capacity to transport over 20,000 passengers an hour.

The project highlights the importance of expanding underground infrastructure in the Middle East region. This is mostly necessitated by the pressure that rapidly growing cities have put on existing transport and utility networks, particularly in major urban centres such as Dubai, Riyadh and Doha.

Underground opportunities

Projects that involve tunnelling, such as metro rail systems, underground highways and pedestrian walkways, are deemed key enablers in reducing congestion and optimising land use.

The recently completed metro systems in Riyadh and Doha are examples of how underground rail networks can facilitate efficient urban mobility, and more such schemes are planned. 

Without these subterranean projects, cities risk being stuck in a permanent state of gridlock, with longer commute times and decreased productivity. At the same time, tunnelling allows urban planners to integrate sustainable transport solutions, as well as large-scale utilities networks, without disturbing existing cityscapes, thereby enhancing connectivity and economic growth.

These developments signal a major shift in engineering priorities, with regional governments investing in underground transport, sewerage and metro extensions to accommodate their growing populations and infrastructure needs.

While the tower crane-dotted skylines of urban centres in the GCC attract attention, delivering major projects underground is an equally impressive engineering feat. Tunnelling under busy cities requires advanced excavation techniques, careful planning and coordination to avoid disruptions.

More tunnelling work is expected as Dubai takes another significant step forward in tackling its ongoing traffic problems [with] a new metro link

UAE tunnelling projects

Tunnelling work forms a significant portion of the Dubai Metro Blue Line extension. Awarded in December for AED20.5bn ($5.5bn), the project includes 15.5km of underground track and five subterranean stations. When operational in 2029, the Blue Line will significantly expand Dubai’s metro capacity, linking major residential and commercial hubs.

More tunnelling work is expected as Dubai takes another significant step forward in tackling its ongoing traffic problems by starting the procurement process for its next metro link: the Gold Line.

Although the technical details of the project have yet to be revealed, it is expected that tunnels will form a major component of the scheme given that the new line will run through busy urban areas where there is little space to build overground. 

The Gold Line will start at Al-Ghubaiba in Bur Dubai. It will run parallel to – and alleviate pressure on – the existing Red Line, before heading inland to Business Bay, Meydan, Global Village and residential developments in Dubailand.

As a first step, the RTA has sent a request for proposals to companies for the lead consultancy role on the multibillion-dollar project.

The UAE’s Etihad Rail also began a study of the tunnels required for the high-speed railway line connecting Abu Dhabi and Dubai in January. The survey works are ongoing on the Jaddaf and Dusup tunnels that will serve the high-speed rail link. Initial plans for the project include tunnelling works totalling 31km.

Another major tunnelling project in the UAE is the $22bn Dubai Strategic Sewerage Tunnels scheme. The client, Dubai Municipality, is preparing to tender its first packages, which include deep tunnels that will stretch 42km in Jebel Ali and 16km in Warsan.

The project will be delivered under a public-private partnership model, with international consortiums competing for contracts. Once completed, these tunnels will replace the traditional wastewater network, reducing energy consumption and enhancing long-term sustainability.

Saudi schemes

In Saudi Arabia, Riyadh is preparing to expand its metro network with the addition of a Line 7 and an extension to the existing Line 2.

The total length of Line 7 will be about 65km, of which 47km will be underground. The line will have 19 stations, 14 of which will be underground.

The project involves constructing a metro line linking the Qiddiya entertainment city development, King Abdullah International Gardens, King Salman Park, Misk City and Diriyah Gate. 

In March, the Royal Commission for Riyadh City (RCRC) gave consortiums until 15 June to submit their bids for a design-and-build contract for the construction of Line 7.

The planned Line 2 extension is 8.4km long, of which 7.1km is underground, and three out of its five stations will be built underground. The RCRC is expected to award the construction contract this year.

In January, the kingdom also completed the phased roll-out of the Riyadh Metro network. The current network comprises six lines spanning about 176km, of which 74km is constructed underground.

These numbers indicate that over 42% of the overall network is underground, highlighting the growing importance of tunnels in the kingdom’s plans to improve infrastructure in its most densely populated cities.

Tunnelling works are also a key component of the plans to improve the stormwater drainage system in Jeddah, where the municipality is preparing for the construction of the King Abdullah Road-Falasteen Road tunnel.

The three-year scheme involves constructing 5.3km of tunnels with an internal diameter of 7.2 metres using tunnel boring machines (TBMs) and another 3.4km of tunnels with a diameter of 3.5 metres driven by pipe jacking or TBMs.

At the kingdom’s Neom gigaproject, city planners are looking to find solutions to many of the problems faced in existing cities and, as a result, tunnels and large-scale underground utilities corridors are being built at the beginning of the project. For example, the development’s Delta Junction tunnels will serve as a railway junction connecting the Spine infrastructure corridor with the Neom Connector rail link to the Oxagon industrial zone. 

The project involves 26.5km of tunnelling work that will be split into a north and a south lot. The construction works are expected to begin this year as the client is evaluating the revised proposals submitted by firms in November last year.

Kuwait Metro will feature extensive tunnelling … ensuring minimal disruption to existing roads while integrating with future transport networks

Further tunnel projects

Beyond the Gulf, Egypt has a long history of tunnelling projects, as it has had to deal with crippling congestion and urban overcrowding for decades. In the 1980s, work was completed on two major projects that involved tunnelling: the first phase of the Cairo Metro system and the Greater Cairo wastewater project, which involved the construction of sewage tunnels on the east and west banks of the Nile. 

Today, Cairo’s tunnelling projects include the Cairo Metro Line 4 project. Spanning 42km with 39 stations, it involves over 20km of tunnels.

Meanwhile, in Morocco, national railway operator L’Office National des Chemins de Fer (ONCF) is constructing a tunnel project in Rabat.

In February, ONCF announced a 3.3km tunnel to be constructed under the Bou Regreg river at an estimated cost of MD1.4bn ($140m). The tunnel will connect the Sale and Agdal stations in an effort to alleviate traffic.

Similarly, the long-awaited Kuwait Metro will feature extensive tunnelling to navigate the dense urban fabric of Kuwait City, ensuring minimal disruption to existing roads while integrating with future transport networks. 

Qatar’s expansion of Doha Metro, meanwhile, requires additional underground infrastructure to connect developing areas and support the country’s vision for a comprehensive public transport system. 

Mecca Metro, already serving millions of pilgrims, is also set for further expansion, likely involving significant tunnelling to facilitate smoother access to holy sites while overcoming geographic constraints. 

In Oman, the Muscat Metro project is likewise expected to link key districts while preserving the city’s landscape and avoiding disruptions to arterial roads by introducing underground sections. 

All of these projects show that tunnels will play an important role in the region’s future as it strives to create cities with more efficient and environmentally sustainable transit and utilities systems. 

https://image.digitalinsightresearch.in/uploads/NewsArticle/13561811/main.gif
Yasir Iqbal

Register for MEED's guest program now to access this article.

Click here to register
Exclusive from Meed
Related Articles
  • Miral commits $3.2bn Yas Island investments

    14 September 2026

    Abu Dhabi’s Miral has announced plans to invest over AED12bn ($3.2bn) in Yas Island over the next five years.

    According to a statement, the investment will fund a pipeline of new projects, as well as expansions and enhancements to existing attractions, supporting Abu Dhabi’s Tourism Strategy 2030.

    The next phase of development will focus on expanding Yas Island’s theme parks and attractions, while introducing new immersive rides and experiences that reflect changing visitor expectations.

    The investment will also strengthen the island’s hospitality offering through additional hotel rooms and enhancements to its overall accommodation portfolio.

    The investment is separate from the previously announced Disney project. 

    Miral recently started the expansion works of its Harry Potter-themed expansion at the Warner Bros World Yas Island entertainment destination in Abu Dhabi.

    The scope of the Warner Bros World phase two expansion includes adding 63,000 square metres (sq m) to the existing theme park.

    This will include a Harry Potter-themed zone with three new rides called Diagon Alley, Hogwarts Castle and The Forbidden Forest, along with retail outlets and food and beverage facilities.

    Yas Waterworld

    Miral has developed a series of theme parks and other entertainment-related attractions on Yas Island, working with several local and international contractors.

    In July last year, Miral opened a new 16,900 sq m expansion of its Yas Waterworld park to the public.

    The expansion added 3.3 kilometres of slide sections to the park. The addition of 18 new rides and attractions, bringing the total number of rides to more than 60, is expected to increase visitor capacity by 20%.

    Construction was carried out by local contractor Alec.

    Disney park

    The Walt Disney Company and Miral signed an agreement in May to build a Disney theme park resort on Yas Island.

    Disney, which is based in the US, said the Abu Dhabi site will be its seventh theme park resort. The others are in California and Florida in the US, Paris in France, Hong Kong and Shanghai in China, and Tokyo in Japan.

    In a statement, Disney noted that the UAE is located within a four-hour flight of one-third of the world’s population, making it a significant gateway for tourism. It is also home to one of the world’s busiest airline hubs, with 120 million passengers travelling through Abu Dhabi and Dubai each year.

    The Disney theme park resort in Abu Dhabi will include entertainment areas, themed accommodations, dining venues and retail experiences.

    In 2023, Miral opened SeaWorld Abu Dhabi, also on Yas Island. Alec was the contractor for the estimated $565m project.

    In 2018, Miral opened the Warner Bros theme park on Yas Island. Belgium’s Besix was the contractor for the estimated $531m project.

    Other Miral projects have included the Etihad Arena and the indoor climbing and skydive centre Clymb. Bam International of the Netherlands was the contractor for the arena and Germany’s Zublin was the contractor for Clymb.

    Yas Island was launched as a project in 2006 by local developer Aldar Properties. The original centrepiece attractions were the Yas Marina Circuit, which hosts Formula 1 motor racing’s annual Abu Dhabi Grand Prix, and the Ferrari World theme park.

    https://image.digitalinsightresearch.in/uploads/NewsArticle/19645816/main.jpg
    Yasir Iqbal
  • Contractors prepare bids for Oxagon wastewater plant

    14 September 2026

     

    Contractors are preparing to submit bids to build a wastewater treatment plant for Oxagon, Neom’s industrial cluster.

    The industrial wastewater treatment package will have an initial capacity of 35,000 cubic metres a day (cm/d), supplied in modular trains of 5,000 cm/d each. A separate sanitary wastewater treatment package will have a capacity of 1,000 cm/d.

    The contract is structured as a design-build-operate project and covers the supply, installation and commissioning of industrial and sanitary wastewater treatment packages, as well as three years of operation and maintenance.

    Bids are due on 2 October, a source close to the project told MEED.

    It is understood that Neom’s water utility Enowa issued the request for proposals earlier this year. The plant is designed to provide “interim wastewater treatment” capacity for Neom’s Oxagon Industrial Quarter as industrial development in the area progresses.

    Enowa has described the treatment systems as interim and de-mountable, allowing them to be installed and subsequently removed or relocated as requirements at Oxagon develop. The plant can be expanded to a maximum of 45,000 cm/d.

    The tender documents also state that Neom may consider export credit agency (ECA) financing for the project, with the strength of bidders’ ECA financing proposals forming part of the commercial evaluation.

    The project follows an earlier tender for the Oxagon Village Water Recycling Plant, which was cancelled despite contractors submitting bids in 2024.

    MEED reported at the time that Beijing-based PowerChina, the local Alfanar Company and Cairo-headquartered Orascom had submitted bids for the project. It is understood that these firms are also likely to participate in the latest tender.

    The earlier scheme included truck receiving facilities, pretreatment, biological treatment using food chain reactor technology, tertiary treatment, sludge handling and recycled-water storage.

    The latest procurement appears to represent a reworked approach to wastewater treatment at Oxagon Industrial Quarter, with the previous engineering, procurement and construction scheme replaced by an interim, modular and de-mountable facility.

    https://image.digitalinsightresearch.in/uploads/NewsArticle/19640903/main.jpg
    Mark Dowdall
  • Saudi Arabia shuts East-West oil pipeline after drone strikes

    14 September 2026

    Saudi Arabia has temporarily closed its 1,200-kilometre East-West pipeline after it was targeted by multiple drones launched from Iraq, disrupting one of the kingdom’s most critical energy export routes and threatening global oil supplies already strained by conflict across the region.

    The Ministry of Energy said the pipeline, which connects the Abqaiq oil field in the east to the Red Sea port of Yanbu, was hit in the Riyadh and Medina regions on 12 September. Specialised teams have begun securing the facility and assessing damage. A Foreign Ministry statement said the attack resulted in injuries and “some damage that is currently being addressed”.

    The closure removes about 4 million barrels a day from the global market, representing 4% of world oil supply. The pipeline’s role has become increasingly critical since the US-Iran conflict forced a near-complete shutdown of flows through the Strait of Hormuz in March.

    Saudi Arabia has been using the East-West route to bypass the chokepoint, but the assault has left the kingdom dependent on substantially reduced Hormuz exports and Red Sea shipping routes now threatened by Iran-backed Houthi forces in Yemen.

    Iraqi Prime Minister Ali Al-Zaidi’s office confirmed the drone strike on the East-West Pipeline originated in the Maysan province, which borders Iran. The government formally condemned the attack, announced an investigation into the Maysan operations command and dismissed its commander. No armed group has claimed responsibility, but security analysts attribute the strike to Iran-backed militias operating from Iraqi territory.

    Riyadh said it was not retaliating “at this stage”, choosing instead to support Iraqi efforts to prevent further strikes from its territory. 

    The attack comes amid wider regional upheaval. Houthi forces have rapidly advanced along Yemen’s coast, seizing the strategic Mokha port and the Zuqar Island in the southern Red Sea, moving closer to the Bab El-Mandab strait. Saudi authorities said the group simultaneously launched dozens of drones and missiles at the southern kingdom on 11 September, striking civilian and economic targets and injuring 73 people.

    Oil analysts and traders reported that Yanbu’s storage capacity, estimated at around 35 million barrels, now holds supplies sufficient for only five to seven days of exports without pipeline operations. Storage facilities at Egypt’s Ain Sokhna and Sidi Kerir ports have similar constraints. Repair timelines remain uncertain, with sources citing estimates ranging from days to five or six weeks.

    The dual disruption of both the pipeline and Red Sea shipping has compressed global energy supplies. Energy analysts warned that without pipeline repairs, oil prices could return to the $120-a-barrel peak reached earlier in the regional conflict.

    https://image.digitalinsightresearch.in/uploads/NewsArticle/19641513/main.gif
    Colin Foreman
  • WSP wins Dammam airport expansion design works

    14 September 2026

    WSP Middle East, the regional arm of Canadian engineering firm WSP, has won a design contract to expand King Fahd International airport in Dammam, Saudi Arabia.

    Dammam Airports Company (DACO) awarded the contract.

    The scope includes designing passenger terminal expansions, facility upgrades, and improvements to airport entrances and access roads.

    It also covers the development of baggage-handling systems, digital services and other associated infrastructure.

    The expansion works will be carried out in line with the airport’s approved masterplan, which targets serving more than 19 million passengers a year by 2030.

    The plan also aims to increase air cargo capacity to more than 600,000 tonnes a year and raise aircraft operational capacity to 77 movements per hour, supported by comprehensive expansions to infrastructure, runways and general aviation facilities.

    This contract forms part of DACO’s ongoing efforts to strengthen the airport ecosystem, enhance operational efficiency, and support the Aviation Programme and Saudi Vision 2030 objectives.

    King Fahd International airport is the kingdom’s third-largest airport by annual passenger traffic, behind Jeddah’s King Abdulaziz International and Riyadh’s King Khaled International.

    DACO was formed in July 2017 to manage, operate and develop King Fahd International airport in Saudi Arabia’s Eastern Province.

    It was established as part of the broader Saudi Vision 2030 privatisation and economic reform programme to corporatise the aviation sector, increase operational efficiency, upgrade infrastructure, and transition state-run airports into commercially viable, world-class regional aviation hubs.

    https://image.digitalinsightresearch.in/uploads/NewsArticle/19639910/main.jpg
    Yasir Iqbal
  • Dubai seeks contractors for multibillion-dollar road scheme

    14 September 2026

     

    Register for MEED’s 14-day trial access 

    Dubai’s Roads & Transport Authority (RTA) is seeking contractors to design and build a multibillion-dollar new road that will run parallel to Sheikh Zayed Road.

    MEED understands that the scope covers the construction of about 30 kilometres (km) of works.

    These include about 15km of viaduct along First Al-Khail Street and more than 14.5km of bridge ramps, along with other associated infrastructure works.

    The RTA floated the expression of interest notice to contractors in early September, with a submission deadline of 10 October.

    The project is another significant initiative aimed at alleviating pressure on the existing Sheikh Zayed Road section from Hadiqa Street to Hessa Street.

    Dubai has previously explored bold concepts to expand capacity on Sheikh Zayed Road, including proposals to introduce double-decker sections to add extra lanes without widening the existing corridor.

    The idea was discussed in the context of rising congestion and limited right-of-way along one of the city’s busiest arterial roads, with elevated decks potentially carrying through-traffic while the existing at-grade lanes served local access.

    The plans ultimately progressed as standalone schemes, with subsequent efforts focusing instead on corridor-wide upgrades, interchange improvements and complementary public transport expansions to manage demand more sustainably.

    The latest project aligns with Dubai’s continued investment in upgrading and expanding its road network to keep pace with rapid population growth and rising commuting demand.

    Planning for growth

    Dubai launched the 2040 Urban Master Plan in March 2021, referencing studies indicating that the emirate’s population will reach 5.8 million by 2040, up from 3.3 million in 2020. The daytime population is set to increase from 4.5 million in 2020 to 7.8 million in 2040.

    In December 2022, Sheikh Mohammed Bin Rashid Al-Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai, approved the 20-Minute City Policy as part of the second phase of the Dubai 2040 Urban Master Plan. 

    In addition to the road projects, the RTA’s Dubai Metro Blue Line extension and Dubai Metro Gold Line form part of Dubai’s plans to improve residents’ quality of life by cutting journey times, as outlined in the policy.

    The policy aims for residents to have 80% of their daily requirements within a 20-minute journey, on foot or by bicycle. This goal will be achieved by developing integrated service centres with all necessary facilities and increasing population density around mass transit stations.

    https://image.digitalinsightresearch.in/uploads/NewsArticle/19639621/main.gif
    Yasir Iqbal