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
  • QatarEnergy gives North Field West topside bidders more time

    2 October 2026

     

    QatarEnergy has granted contractors more time to prepare bids for a tender covering the engineering, procurement, construction and installation (EPCI) of large platforms for the North Field gas field in Qatari waters.

    Contractors now have until 12 October to submit technical bids for the project, according to sources. Commercial bids are currently due on 10 November.

    The following contractors, among others, are understood to be bidding for the North Field West (NFW) production deck modules (PDMs) tender:

    • China Offshore Oil Engineering Company (China)
    • Larsen & Toubro Energy Hydrocarbon (India)
    • McDermott (US)
    • Saipem (Italy)

    The core scope comprises the EPCI of four PDMs and associated structures. The PDMs will increase gas production from North Field reservoirs and provide additional gas feedstock for the NFW liquefied natural gas (LNG) development.

    The tender, issued earlier this year, forms part of the wider NFW project, the third and final phase of the state enterprise’s North Field LNG expansion programme.

    The previous deadlines for technical bids were 30 August, 15 September and 28 September, while commercial bids were previously due on 25 October, as MEED reported.

    Before issuing the PDMs tender, QatarEnergy awarded US firm McDermott a contract for the EPCI of four offshore jackets that will also support gas feedstock supply for the NFW LNG project. The contract is estimated to be worth about $200m, MEED reported in January.

    North Field LNG expansion

    QatarEnergy is advancing the three phases of its estimated $40bn North Field LNG expansion project. EPC works on all three projects are progressing.

    QatarEnergy is understood to have committed nearly $30bn to the first two phases – North Field East (NFE) and North Field South (NFS) – which will lift Qatar’s LNG production capacity from 77.5 million tonnes a year (t/y) to 126 million t/y by 2028.

    QatarEnergy awarded the main EPC contracts for NFE in 2021. The project was intended to raise LNG output to 110 million t/y by 2025. The $13bn EPC package – covering the EPCI of four LNG trains, each with a capacity of 8 million t/y – was awarded in February 2021 to a consortium of Japan’s Chiyoda and France’s Technip Energies.

    In May 2023, QatarEnergy awarded the $10bn main EPC contract for NFS to a consortium of Technip Energies and Consolidated Contractors Company (CCC). The contract includes two LNG trains, each with a capacity of 7.8 million t/y.

    Once fully operational, the first two phases are expected to add 48 million t/y of LNG supply to the global market.

    QatarEnergy took the final investment decision on NFW earlier this year, awarding an EPC contract estimated at $8bn to a joint venture comprising Technip Energies, CCC and Gulf Asia Contracting in February.

    Chiyoda carried out the front-end engineering and design work for the NFW LNG project.

    The NFW scope covers the EPC of two LNG trains with a combined capacity of 16 million t/y, as well as associated facilities for gas treatment, natural gas liquids recovery and helium extraction.

    In addition to LNG, NFW is expected to produce about 175,000 barrels of oil equivalent a day of condensate, ethane and liquefied petroleum gas.

    With all three phases under EPC execution – and NFE scheduled for commissioning later this year – QatarEnergy is positioning itself to remain one of the world’s largest LNG suppliers in the long term.

    READ THE OCTOBER 2026 MEED BUSINESS REVIEW – click here to view PDF

    Industry and logistics drive development at Neom; Saudi Arabia’s investment priorities realign amid conflict; MEED’s 2026 power developer ranking.

    Distributed to senior decision-makers in the region and around the world, the October 2026 edition of MEED Business Review includes:
    To see previous issues of MEED Business Review, please click here
    https://image.digitalinsightresearch.in/uploads/NewsArticle/20208200/main.jpg
    Indrajit Sen
  • Egypt implements oil and gas storage projects worth $1.1bn

    2 October 2026

    Egypt is implementing oil and gas storage projects worth a total of £E54bn ($1.1bn), according to a statement released by the country’s cabinet.

    Active developments include expanding El-Hamra Petroleum Port in El-Alamein on the Mediterranean coast, as well as building a jet-fuel storage and transport hub at the Badr depot in Cairo.

    Other projects include constructing new storage tanks at refinery complexes in Amreya, Alexandria; Assiut; and Cairo.

    Over the past 12 years, Egypt has built 84 petroleum storage facilities with a total capacity of 5.2 million tonnes, the cabinet statement said.

    Egypt has invested £E42.7bn ($880m) in developing these facilities, with the aim of bolstering domestic energy security.

    Completed infrastructure projects include facilities in Sohag (Upper Egypt) and Alexandria.

    They also include offshore terminal and storage facilities, a liquid bulk station in Ain Sokhna, and strategic crude oil storage tanks across the country.

    Storage facilities have become a strategic priority for Egypt since the US and Israel attacked Iran on 28 February, triggering a regional war that has disrupted shipping through the Strait of Hormuz.

    The disruption has made imports of hydrocarbon products into Egypt less predictable, increasing the importance of strategic stockpiles.

    READ THE OCTOBER 2026 MEED BUSINESS REVIEW – click here to view PDF

    Industry and logistics drive development at Neom; Saudi Arabia’s investment priorities realign amid conflict; MEED’s 2026 power developer ranking.

    Distributed to senior decision-makers in the region and around the world, the October 2026 edition of MEED Business Review includes:
    To see previous issues of MEED Business Review, please click here
    https://image.digitalinsightresearch.in/uploads/NewsArticle/20208195/main.jpg
    Wil Crisp
  • Bankability key to Saudi PPP pipeline

    2 October 2026

     

    Saudi Arabia’s National Centre for Privatisation & PPP (NCP) holds structured talks with bidders and lenders before launching transactions to ensure projects in its pipeline are bankable, according to a senior official.

    Speaking on a panel at MEED’s Shaping Mega Projects conference in Riyadh on 28 September, Tariq Alghaziri, executive vice-president at the NCP, said the centre carries out market sounding with potential bidders and debt providers, including commercial and Islamic banks, before announcing deals.

    “Bankability is a key word for us,” he said. “You can structure the deal in the way you want. You can have whatever technicalities and technologies are required, but is it suitable for the private sector to deliver? That’s the big question.”

    Alghaziri said the national privatisation strategy, approved at the end of 2025 and published at the start of 2026, sets the NCP’s targets up to 2030 and outlines its project pipeline. The strategy coincides with the third phase of Vision 2030, which he said is focused on measuring impact after earlier phases established the legal framework and enabled the private sector.

    Public-private partnership (PPP) contracts typically run for 25 years and, in some cases, more than 40 years, he said, which makes early engagement essential. “When we launch it, all the bidders, suppliers, EPC contractors, banks and ECAs are on the same page, and then they just have to align on commercial points and not negotiate legal aspects.”

    Risk transfer

    Jonathan Looker, managing director for Saudi Arabia at UK consultancy Mott MacDonald, said the public and private sectors often perceive risk very differently.

    "Can you put yourself in the shoes of the person you’re trying to transfer risk to?” he said. “There isn’t one single allocation model that is fit for every project.”

    Looker said failure to agree on risk can prevent projects from reaching financial close. "I’ve unfortunately been involved in a number of projects where we just can’t get the deal done because there is not a meeting of minds around a specific aspect of risk.”

    Alghaziri said Saudi regulations now state that the party with the capacity to manage a risk should take it, but that risk carries a cost. “You cannot just give the risk without pricing it,” he said. The NCP has trained more than 300 people over the past five or six years, including through a PPP professional certification it introduced in the kingdom.

    Early planning

    Hesham Ouf, senior director of finance at Roshn Group, the Public Investment Fund (PIF) subsidiary, said risk management begins at the feasibility stage. “You need to have the stage gates right from the beginning until the project is delivered,” he said.

    Ali Al-Kuwari, senior manager of export development at Qatar Development Bank (QDB), said early disclosure of procurement needs allows lenders to assess project risk. “For me, the answer is very easy. I’ll ask for a sovereign guarantee,” he said.

    Wesley Thomson, partner and head of environmental, social and governance (ESG) at UK property consultancy Knight Frank, said climate exposure is becoming a central risk for long-life assets. “Mitigation is not the right word any more. I prefer to say adaptation, because the truth is you need to adapt to what we’re seeing.”

    READ THE OCTOBER 2026 MEED BUSINESS REVIEW – click here to view PDF

    Industry and logistics drive development at Neom; Saudi Arabia’s investment priorities realign amid conflict; MEED’s 2026 power developer ranking.

    Distributed to senior decision-makers in the region and around the world, the October 2026 edition of MEED Business Review includes:
    To see previous issues of MEED Business Review, please click here
    https://image.digitalinsightresearch.in/uploads/NewsArticle/20207592/main.png
    Colin Foreman
  • Financing hinders progress at major Iraqi refinery project

    2 October 2026

     

    Financial problems are hindering progress at Iraq’s Al-Faw Investment Refinery project, according to industry sources.

    Despite the main contract being signed more than two years ago, construction of the main refinery units has yet to begin because of ongoing financial issues, sources said.

    In May 2024, a statement released by the Iraqi Prime Minister’s Office said that Iraq’s state-owned Southern Refineries Company and China National Chemical Engineering Company (CNCEC) had signed a contract to develop the project.

    Iraq’s Oil Ministry previously said the project would be worth $7bn-$8bn.

    The project has struggled to make progress even after direct intervention by Iraq’s previous prime minister.

    On 6 August 2025, 15 months after the May 2024 contract signing with CNCEC, Mohammed Shia Al-Sudani, then prime minister, chaired a special meeting to resolve administrative and technical obstacles preventing the project from starting.

    At the time, Al-Sudani said the refinery project would have significant financial returns and would be “a breakthrough in the oil industry”.

    While the meeting in 2025 is believed to have solved some of the administrative issues blocking progress, financial problems with the project remain, sources said.

    The Al-Faw project is part of the Iraqi government’s plan to increase Iraq’s refining capacity, attract foreign investment and increase domestic production of petroleum products.

    Under existing plans, the refinery will have a capacity of 300,000 barrels a day and will produce oil derivatives for both domestic and international markets.

    The project will be carried out in two stages.

    The first phase will involve refining operations, while the second will involve constructing a petrochemicals complex with a capacity of 3 million tonnes a year.

    The project also includes building a 2,000MW power plant and establishing the Al-Faw Academy for Refinery Technology to train 5,000 Iraqi workers who will eventually work at the facility.

    Hualu, a subsidiary of CNCEC, signed a preliminary principles agreement for the project in December 2021.

    Due to material price inflation since December 2021, some insiders believe the project value may now be significantly higher than the previously estimated $7bn-$8bn.

    READ THE OCTOBER 2026 MEED BUSINESS REVIEW – click here to view PDF

    Industry and logistics drive development at Neom; Saudi Arabia’s investment priorities realign amid conflict; MEED’s 2026 power developer ranking.

    Distributed to senior decision-makers in the region and around the world, the October 2026 edition of MEED Business Review includes:
    To see previous issues of MEED Business Review, please click here
    https://image.digitalinsightresearch.in/uploads/NewsArticle/20207119/main.jpg
    Wil Crisp
  • Saudi pre-budget leans on borrowing to fund projects

    2 October 2026

    Saudi Arabia plans to spend SR1.39tn ($371.2bn) in 2027, according to the Finance Ministry’s pre-budget statement. That is 3% less than the estimated outturn for 2026, after regional conflict and the closure of the Strait of Hormuz pushed this year’s expenditure well past its allocation.

    The ministry now expects 2026 spending to reach SR1.44tn, which is SR122bn or 9.3% above the SR1.31tn approved in the budget. Revenues are estimated at SR1.19tn, SR43bn above budget, leaving a deficit of SR245bn, equal to 4.9% of GDP. The original budget assumed a SR165bn deficit, or 3.3% of GDP.

    For 2027, the statement projects revenues of SR1.2tn and a deficit of SR191bn, or 3.6% of GDP. Expenditure is forecast to rise to SR1.48tn in 2028 and SR1.54tn in 2029, with deficits of SR177bn and SR192bn projected for those years. On the ministry’s figures, the kingdom will run cumulative deficits of SR560bn ($149.3bn) between 2027 and 2029.

    The economic backdrop has deteriorated sharply. The ministry expects real GDP to contract by 3.6% in 2026, driven by a 21.8% fall in oil activity, while non-oil activity grows by 3.2%. It forecasts a rebound to 12.8% real growth in 2027.

    Capital spending

    The statement does not publish a capital expenditure figure or a sector breakdown. Those will follow with the budget in Q4. It does signal that project spending will continue. As Vision 2030 enters what the statement calls its third phase, the government says efforts will focus on “accelerating the pace of delivery and capitalising on growth opportunities through continued government capital expenditure”. It also wants a stronger role for the Public Investment Fund (PIF) and the National Development Fund in stimulating domestic investment.

    The ministry says it will “implement infrastructure-related programmes” and direct resources “towards priority programmes and projects”. It also commits to “maximise the utilisation of existing government assets and investments”. That wording points to a sharper focus on completing and monetising existing schemes rather than launching new ones.

    The medium-term debt strategy is designed to ensure “the continuity of the implementation of priority projects without being linked to the fluctuations of the economic cycle”, according to the statement.

    The government’s revenue scenarios hold expenditure at SR1.39tn in all three cases. Under the lowest revenue case of SR1.13tn, the deficit widens to SR259bn. The highest case of SR1.26tn narrows it to SR132bn. Any change falls on borrowing rather than on spending.

    The ministry says debt will deliberately rise by the end of 2027, and the borrowing plan will be disclosed by the end of this year. Alongside bonds, sukuk and loans, the government plans to expand “alternative government financing, including financing of projects, infrastructure and export credit agencies” in 2027 and over the medium term.

    Private capital

    The statement presents private investment as a growing share of project delivery. Investment in privatisation and public-private partnership (PPP) projects reached about SR180bn by the end of 2025. The National Privatisation Strategy was approved in November 2025. Ten privatisation and PPP projects have been launched under it in the first half of 2026, including the Prince Naif Bin Abdulaziz International Airport PPP in Qassim. Contracts were signed for the Sabic Mental Health Hospital and the Jubail Container Terminal, taking the total to 83 partnership contracts. Private capital investment has exceeded SR56.2bn, against a target of SR240bn by 2030.

    The National Infrastructure Fund has committed SR10.5bn since 2022 to projects with a combined value of about SR59.3bn, of which SR44.1bn is private investment. Projects it has backed include the Neom green hydrogen project, the Shuaibah solar photovoltaic plants, the Prince Mohammad Bin Abdulaziz Airport expansion, the Jubail-Buraidah independent water transmission pipeline and the Ezditek data centre. The fund plans to expand into healthcare, education, sports and artificial intelligence.

    PIF’s domestic investments totalled about SR750bn between 2021 and 2025. The statement lists several recent contracts across its portfolio. Diriyah Company, the PIF-owned developer of the Diriyah gigaproject, awarded a SR1.8bn contract to a consortium of local companies to build the Saudi Museum of Contemporary Art. PIF-owned Soudah Development signed a SR1.3bn agreement with National Grid SA, the transmission subsidiary of Saudi Electricity Company, to deliver electricity infrastructure for the Soudah Peaks project. Saudi Entertainment Ventures, also owned by PIF, plans 14 destinations across 13 cities, with investment of more than SR45bn. The Saudi Export-Import Bank plans to provide SR41.6bn of financing and insurance to non-oil exporters in 2027.

    Logistics investment has also become a priority since the disruption to Gulf shipping. The share of non-oil exports passing through Red Sea ports rose to 40.7% during the crisis, from 19.3% before it. In July, the General Ports Authority signed contracts worth up to SR1bn for seven logistics centres at Jeddah Islamic Port and Al-Khumrah. A separate logistics corridors initiative connects Gulf ports to the Red Sea by road and rail.

    The final 2027 budget is due for approval in Q4.

    MEED’s October 2026 report on Saudi Arabia includes:

    > COMMENT: Saudi projects hold steady
    > GOVERNMENT: Riyadh looks to reset its regional defence outlook
    > ECONOMY: Conflict bolsters case for Saudi economic diversification
    > BANKING: Saudi lenders readjust to lower lending and deposit climate
    > UPSTREAM: Aramco upstream spending gathers pace
    > DOWNSTREAM: Sabic steps up Saudi petchems investment
    > POWER: Saudi Arabia’s power award activity slows
    > WATER: Saudi water sector hits sharp slowdown
    > CONSTRUCTION: Saudi construction defies the headwinds
    > TRANSPORT: Saudi infrastructure pushes forward amid conflict
    > DATABANK: Saudi data indicates project spending shift

    To see previous issues of MEED Business Review, please click here
    https://image.digitalinsightresearch.in/uploads/NewsArticle/20206117/main.gif
    Colin Foreman