Construction of Athens’ Metro Line 4 has been suspended after engineers discovered significant damage to residential buildings above the tunnel in the Kypseli neighbourhood, prompting the evacuation of dozens of families and raising doubts about when the project can resume.
Extent of damage and safety measures
According to Capital.gr, the damage includes large cracks in load‑bearing walls and settlement of foundations that render the affected blocks unsafe for habitation.
“Serious damages to the buildings require the temporary relocation of residents,”the outlet reported, adding that the municipality has begun moving families to nearby shelters while structural assessments continue.
eKathimerini.com echoed the assessment, noting that the tunnel’s integrity is also in question. The newspaper said that “the tunnel damage clouds the project’s restart,” and that engineers are conducting a forensic review to determine whether remediation can be achieved without compromising the line’s long‑term safety.
Official response and political backdrop
The Ministry of Infrastructure and Transport, through its spokesperson, confirmed that work on the Kypseli segment will remain on hold “until a thorough safety verification is completed and the necessary remedial works are finished.” The ministry also announced that the Metro operator, Attiko Metro, will fund the temporary relocation of the affected households, though exact costs have not been disclosed.
Capital.gr added that the suspension will likely extend “until the elections,” referring to Greece’s scheduled parliamentary vote in early summer 2026. The timing has heightened political sensitivity, as the Metro expansion is a flagship project of the current government and a point of scrutiny for opposition parties demanding accountability for public‑sector oversights.
Government officials have pledged transparency. A senior official told reporters that an independent technical committee, chaired by a veteran civil‑engineer, will issue a public report on the cause of the failure and propose a remedial plan. The committee’s findings are expected within the next eight weeks.
Implications for the Line 4 project
Line 4, slated to connect the western suburb of Marousi with the southern district of Elliniko, is a critical component of Athens’ effort to reduce traffic congestion and improve public transit coverage. When completed, the line will add eight new stations and serve an estimated 250,000 daily riders.
The halt adds uncertainty to the project’s original 2028 completion target. While the Ministry has not released a revised timeline, analysts cited by eKathimerini estimate that the delay could push the opening by at least one to two years, potentially increasing the overall budget by several hundred million euros due to inflation and additional safety works.
Local residents have expressed frustration, with community leaders demanding swift reparations and clearer communication. A resident association in Kypseli, quoted by Capital.gr, warned that “prolonged displacement without a firm schedule threatens the social fabric of the neighbourhood.”
Despite the setback, Attiko Metro officials maintain that the broader network expansion remains a priority. They have indicated that work on other sections of Line 4 will continue, while the Kypseli segment undergoes a “comprehensive safety audit.” The outcome of that audit, coupled with the political climate surrounding the upcoming elections, will likely dictate the pace of the project’s resumption.
In the meantime, city authorities are coordinating with social services to ensure that displaced families receive adequate support, including temporary housing, financial assistance, and counseling. The situation underscores the challenges of urban infrastructure development in historic cities where new underground works intersect with dense, aged building stock.
