About ITA

Underground solutions for a better world

Founded in 1974 by the initiative of nineteen Nations, the International Tunnelling and Underground Space Association (ITA) mission is to lead, advocate and facilitate the development of sustainable and innovative solutions for increased, optimised, safe and equitable use of Underground Space.


WTC 2024 Shenzen Overview

The ITA Community

Many Peoples, One Planet, One ITA

United as one, ITA is a Worldwide community dedicated
to underground solutions for a better world.

Presently, the ITA Community gathers 80 Member Nations and
219 Corporate or individual Affiliate Members.

Join the ITA Community and discover our Interactive Map!


ITA presence world map

ITA Prime Sponsors

Herrenknecht AG Bekaert Underground Solutions Master Builders Solutions Implenia Bau AG The Robbins Company Sika Services AG CRCHI Sandvik Mining and Construction Seli SPA Normet International ltd CREG Mapei SPA  Swiss Tunnelling Consultants