Welcome to ITA portal

Toggle Navigation

About Tunnelling
- Why go underground?
  Social reasons
  Indirect benefits
  Social balance
  Environmental reasons
  Land use and location
  Isolation considerations
  Environmental preservation
  Topographic reasons
  Economical reasons
  Costs
  Financing
  Risks
- How to go underground?
  Design
  Geology
  Site investigation
  Geotechnics
  Design methods
  Ground treatment
  Support systems
  Environment
  Monitoring
  Construction Methods
  Conventional tunnelling
  Mechanized tunnelling
  Surface tunnelling
  Subaquatic tunnelling
  Combination of methods
  Operation
  Equipment
  Auscultation
  Maintenance
  Rehabilitation
  Upgrading
  Safety
  Safety during design stage
  Safety during construction
  Fire safety
- Use of underground spaces
  Underground planning
  Mining
  Architecture
  Transport
  Urban environment
  Interurban environment
  Energy, Water & Telecommunication
  Urban utilities
  Non-urban utilities
  Other Subsurface Facilities
  Public buildings
  Goods storage
  Industrial facilities
  Military facilities
- Cases histories
  Images gallery
  History
  Ancient period
  XIX Century (before 1914)
  1914 -1950
  1950-1980
  After 1980
  Cases
  Trans Tokyo Bay - Japan
  Calle 30 – M30 Madrid
  Gotthard Base Tunnel (GBT)
  Boston's Central Artery/Tunnel
  Cairo metro
  Seikan tunnel - Japan
  Seoul metro - Korea
  SMART - Malaysia
ITA Activities
- About ITA
  Secretariat
  ITA Mission Statement
  Organization
  Executive council
  General Assemblies
  ITA Advisers
- Members
  Member nations
  Affiliate members
  Prime sponsors
  Supporters
  Individual Members
  Become a member
- Publications
  Search for a publication
  WG Publications
  Committees Publications
  Archives ITA
  Muir Wood lecture
  Tunnelling week
- WG & Committees
  Working Groups
  ITAtech
  ITACUS
  ITA-CET
  ITA-COSUF
  ITA Sustainability Committee
  Young Members
  ITA Client Forum
- Press room
  ITA Press releases
  ITA in the Press
  Press contact
  ITA Photos
- Future events
- News
ITA Awards
- Entries
- Conference
- Sponsors
- Judges
Cases Database
ITA Library
My ITA

Join us as an Individual Member!

Joining ITA as an individual member is the best way to immerse yourself in the core of the global tunnelling and underground space community.

Join us in celebrating
this event during WTC 2024
ITA

Underground Solutions
for a better world
Many Peoples

One Planet

One ITA
ITA

The leading International
organization promoting
Tunnelling and the use of
Underground Space
ITA

79 Member Nations

219 Corporate and Individual Members

WTC

https://www.wtc2025.se/
/#

All about the next World Tunnel Congress: WTC2025 in Stockholm, Sweden and WTC2026 in Montreal, Canada