Excavation of Athens Metro Line 4 Continues in the Wrong Direction, Causing Delays in €1.51 Billion Project

Written by Bruno Teles

Published on 20/03/2025 at 16:36

Erro de escavação na Linha 4 do Metrô de Atenas gera atrasos e ajustes na obra de €1,51 bilhão. Projeto prevê 15 novas estações até 2030

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Construction of the New Athens Metro Anticipates 15 New Stations and 12.8 Km of Tracks by 2030, but Tunnel Orientation Error May Impact Schedule and Costs

The construction of Line 4 of the Athens Metro, one of the largest infrastructure projects in Greece, faces a significant setback: an excavation error diverted the tunnels from the planned route, causing delays and potential budget impacts. With a total investment of €1.51 billion, the new line will add 15 stations and 12.8 km to the Greek capital’s metro system. Attiko Metro S.A., the company responsible for the project, confirmed that engineers are correcting the problem to minimize losses and maintain delivery within the established deadline.

Delays in the Construction of Line 4 of the Athens Metro

The incorrect excavation occurred in the area of the Kolonaki station, where the tunnels advanced at an erroneous angle. According to the Athens Urban Transport Authority, work is being adjusted to align the excavation with the original route. However, the correction may lead to a delay in the delivery of Line 4 of the Athens Metro, which was expected to begin operations between 2029 and 2030.

The new line will be crucial for alleviating the city’s traffic and providing an efficient alternative for thousands of daily passengers. It is estimated that 340,000 people will use Line 4 of the Athens Metro daily, reducing the need for travel by private vehicles and promoting a more sustainable transportation system.

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Investments and Support from the European Investment Bank

Attiko Metro S.A., responsible for the project, has not disclosed official statements regarding the incident.

The financing for Line 4 of the Athens Metro includes €730 million approved by the European Investment Bank (EIB), reinforcing the project’s importance for mobility in the Greek capital. The remainder of the funding comes from resources from the Greek government and partnerships with transportation sector companies.

The multinational Alstom was contracted to provide the autonomous trains that will operate on the new line. These vehicles, requiring no human operators, represent a technological innovation already implemented in cities like Paris, Singapore, and Barcelona.

Sustainability and Integration into Public Transport

Line 4 of the Athens Metro will be fully integrated with Lines 2 and 3, allowing connections at the Akadimias and Evangelismos stations. This will facilitate travel between different parts of the city, improving accessibility to public transport.

The use of electricity-powered trains will also contribute to reducing CO₂ emissions, supporting the European Union’s environmental goals for the transport sector. According to experts from the International Public Transport Association (UITP), this type of modernization is essential for making cities more sustainable.

Expectations for the Coming Years

Attiko Metro S.A. emphasized that adjustments to the excavation are being made with the utmost technical rigor to avoid further delays in the construction of Line 4 of the Athens Metro. If the schedule is maintained, the expansion will be one of the largest ever carried out in the railway sector in Greece, solidifying the country as a reference in transport infrastructure.

Excavation of Athens Metro Line 4 Continues in the Wrong Direction, Causing Delays in €1.51 Billion Project

Construction of the New Athens Metro Anticipates 15 New Stations and 12.8 Km of Tracks by 2030, but Tunnel Orientation Error May Impact Schedule and Costs

Delays in the Construction of Line 4 of the Athens Metro

Investments and Support from the European Investment Bank

Sustainability and Integration into Public Transport

Expectations for the Coming Years

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Excavation of Athens Metro Line 4 Continues in the Wrong Direction, Causing Delays in €1.51 Billion Project

Construction of the New Athens Metro Anticipates 15 New Stations and 12.8 Km of Tracks by 2030, but Tunnel Orientation Error May Impact Schedule and Costs

Delays in the Construction of Line 4 of the Athens Metro

Investments and Support from the European Investment Bank

Sustainability and Integration into Public Transport

Expectations for the Coming Years

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With a wingspan of 152 meters, 76 tires, and a capacity to carry 1,270 tons, the Boeing Pelican was the giant “flying ship” that promised to cross oceans close to the water on an invisible air cushion beneath its wings.

A Chinese factory in Guangdong is assembling a humanoid robot every 30 minutes while Tesla, Figure, and Boston Dynamics still struggle to deliver 10 thousand per year.

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