Budapest’s renovated M3 metro stations struggle with waterlogging

Budapest’s metro line 3, which has just completed a substantial renovation, is facing scrutiny due to repeated waterlogging problems. Despite the investment, recent heavy rains and snowfall have revealed persistent water-related challenges in multiple key stations.

Unveiling the damp reality

During the extensive reconstruction that spanned over five years, the focus was primarily on repairing visible waterlogging issues at that time. However, according to Népszava, challenges have surfaced. Recent reports indicate that stations such as Corvin-negyed, Határ Road, Kőbánya-Kispest, Deák Ferenc Square, Forgách and Pöttyös Street continue to grapple with water puddles and even spectacular watercourses.

Unexpected hurdles post-renovation

The Association for Metro (Metróért Egyesület) acknowledged that such challenges are not uncommon in metro operations. The intriguing aspect, however, lies in the fact that these issues persist despite the recent completion of the HUF 217.5 billion (approximately EUR 570 million) renovation, with the final station handed over in May.

This waterlogging situation further complicates the challenges already faced by Hungary’s transportation system. In our recent article, we highlighted the disruptions caused by the Volánbusz strike. The article sheds light on the additional struggles commuters are enduring, with bus services experiencing major disruptions.

BKV’s response and explanations

BKV Ltd., the operator of the metro lines, did not deny the news about the serial leaks. In their response to Népszava, they explained that “groundwater and other leachate are characterised by their indefinite movement in the soil structure”. They emphasised that efforts were made to seal visible, active waterlogging during the renewal period. However, the age of the underground building structures (30-50 years old) renders complete exclusion of groundwater and leachate impossible without an entirely new building structure.

Decades until the next overhaul

The costly M3 metro renewal project may not have comprehensively addressed the ageing infrastructure’s waterproofing. The operators stressed that the next reconstruction would only occur decades later, when these structures will be 60-80 years old. Uncertainties arise regarding the state of the tunnel structure and its waterproofing at that time.

BKV’s assurance amidst uncertainty

To allay concerns, BKV assured that they are prepared to promptly address expected water damage, both before and after the next renovation. They emphasised that the technical aspects of the metro renovation adhered to construction standards and regulations. However, they also acknowledged the difficulty of safeguarding against the unpredictable adverse effects of increasingly prevalent extreme weather conditions.

Navigating challenges in metro modernisation

While the renovation of M3 metro was an enormous project, the waterlogging issues underscore the challenges inherent in modernising ageing infrastructure. Adapting to changing climate conditions complicates the task of ensuring the resilience of underground structures, requiring continuous attention and innovative solutions. Lessons from this situation and ongoing transport challenges, like the Volánbusz strike, can guide future urban infrastructure projects facing similar issues.

Source: Népszava