| Astaldi S.p.A. | |
|---|---|
| Type | S.p.A. |
| Industry | Construction |
| Founded | 1929 |
| Founder | Sante Astaldi |
| Fate | Acquired by Webuild |
| Successor | Webuild |
| Headquarters | , Italy |
| Services | Construction of railways, roads and motorways, bridges, metros, airports, tunnels, and hydraulic and hydroelectric power stations |
| Revenue | €3.0 billion (2016) |
| €379.8 million (2016) | |
| €97.4 million (2016) | |
Number of employees | 11,500 (As of 2016[update]) |
| Parent | Webuild |
| Website | www |

Astaldi S.p.A. was an Italian multinational construction company based in Rome. It was active in civil engineering, hydraulic engineering, electromechanical engineering and transport infrastructure. It was acquired by Webuild in 2020.
The company was founded in 1929 by Sante Astaldi. After the Second World War it expanded into Africa, where it focused on road construction, and between the 1950s and the 1970s it entered the Middle East, Central and South America and the Far East. In 1950 the business was split into two companies, one for foreign markets and one for Italian projects; they merged to form the present-day Astaldi S.p.A. in the 1980s. Through the 1980s and 1990s it entered new markets including the United States, Turkey and Indonesia.
In May 2016 wooden formwork collapsed during a concrete pour at the Muskrat Falls powerhouse in Labrador, Canada, where Astaldi Canada was the main contractor. Five workers fell into wet concrete. In 2020 a tribunal of the Professional Engineers and Geoscientists of Newfoundland and Labrador found that the company held a permit for civil engineering but not for structural engineering, and that its work on the formwork showed "professional incompetence". Astaldi pleaded guilty and was fined the maximum of C$25,000. The project owner, Nalcor, had removed Astaldi from the project in late 2018.
In November 2020 Webuild completed the acquisition of a 65% stake in Astaldi through a €225 million capital increase.
Significant projects included: