Tunnel Construction Market Global Report 2026

The tunnel construction market size has grown strongly in recent years. It will grow from $111.07 billion in 2025 to $120.26 billion in 2026 at a compound annual growth rate (CAGR) of 8.3%. The growth in the historic period can be attributed to increasing urbanization and infrastructure development projects, rising government investments in transportation networks, growing demand for underground utility expansion, increasing need for improved water management infrastructure, expanding mining activities requiring underground access systems.

The tunnel construction market size is expected to see strong growth in the next few years. It will grow to $162.68 billion in 2030 at a compound annual growth rate (CAGR) of 7.8%. The growth in the forecast period can be attributed to increasing demand for sustainable underground infrastructure solutions, rising investments in high-speed rail and metro tunnel projects, growing development of smart city infrastructure, expanding need for efficient urban traffic management systems, and increasing focus on resilient infrastructure development. Major trends in the forecast period include increasing adoption of automated tunnel excavation and construction technologies, rising use of advanced geotechnical monitoring systems for tunnel safety management, growing integration of prefabricated construction components for faster tunnel development, expanding deployment of advanced tunnel ventilation and environmental control systems, and increasing focus on enhanced tunnel safety, durability, and structural reinforcement solutions.

The expansion of water and wastewater infrastructure is expected to propel the growth of the tunnel construction market in the coming years. Water and wastewater infrastructure refers to the essential facilities and networks that enable the treatment, storage, distribution, collection, and disposal of water and wastewater to support public health, sanitation, and economic activities. Water and wastewater infrastructure is expanding due to increasing urbanization and population growth, which are driving the need for greater water supply, sanitation, and wastewater treatment capacity to support growing communities. Tunnel construction supports water and wastewater infrastructure by enabling the installation of underground pipelines, sewer networks, drainage systems, and water conveyance channels that facilitate the efficient transport, distribution, and treatment of water and wastewater across urban and industrial areas. For instance, in May 2024, according to the Central Statistics Office, an Ireland-based government agency, the number of registered domestic wastewater treatment systems in Ireland grew by 1.1% to reach 492,359 in 2023. Therefore, the expansion of water and wastewater infrastructure is driving the growth of the tunnel construction market.

Major companies operating in the tunnel construction market are focusing on developing innovative solutions such as underground loop transit systems to improve urban mobility, reduce traffic congestion, and enhance transportation efficiency in densely populated cities. Underground loop transit systems are tunnel-based transportation networks that use electric vehicles to transport passengers rapidly between destinations through dedicated underground routes. For instance, in July 2025, The Boring Company, a US-based infrastructure and tunneling technology company, unveiled the Music City Loop, designed to provide a high-speed, zero-emission underground transit connection between downtown Nashville and Nashville International Airport. The system offers benefits such as shorter travel times, reduced traffic congestion, and environmentally sustainable transportation. It aims to provide customers with faster and more reliable urban travel while supporting smart city development, transportation modernization, and sustainable mobility initiatives.

In April 2023, SYSTRA, a France-based engineering and mobility infrastructure company, acquired Subterra for an undisclosed amount. Through this acquisition, SYSTRA aims to strengthen its expertise in tunnel engineering and underground structures, expand its presence in Spain and Latin America, and enhance its capabilities to deliver complex tunnel construction and underground infrastructure projects. Subterra is a Spain-based engineering company specializing in the design of tunnels and underground structures.

Major companies operating in the tunnel construction market are China State Construction Engineering Corporation Limited, China Railway Group Limited, China Railway Construction Corporation Limited, China Communications Construction Company Limited, VINCI Construction SAS, Bouygues Construction SA, HOCHTIEF Aktiengesellschaft, Larsen & Toubro Limited, STRABAG SE, Skanska AB, Kiewit Corporation, Obayashi Corporation, Fluor Corporation, Webuild S.p.A., Shimizu Corporation, Balfour Beatty plc, Taisei Corporation, ACCIONA Construcción S.A., Kajima Corporation, Bechtel Corporation, Tutor Perini Corporation, Afcons Infrastructure Limited, Ghella S.p.A., Dragados S.A., Samsung C&T Corporation, Hyundai Engineering & Construction Co. Ltd.

Asia-Pacific was the dominant region in the tunnel construction market in 2025. Asia-Pacific is expected to be the rapidly growing region in the forecast period. The regions covered in the tunnel construction market report are Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East, Africa.

The countries covered in the tunnel construction market report are Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

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