Finland border fence construction has reached a major milestone with the completion of a 200-kilometre barrier along selected parts of the country’s frontier with Russia, strengthening surveillance and security infrastructure on one of Europe’s most closely watched borders.
The Finnish Border Guard marked the completion of the project on Monday at an event in Nuijamaa in south-eastern Finland. The new infrastructure covers only a portion of Finland’s 1,340-kilometre border with Russia, with the locations chosen after security assessments identified areas where additional protection and surveillance were considered most necessary.
The barrier itself rises 4.5 metres and is supported by a technical surveillance system, patrol roads and a 25-metre-wide cleared zone. Together, the infrastructure is designed to make unauthorised crossings more difficult while giving border authorities better visibility and faster access to areas along the frontier.
The project cost 356 million euros, coming in 22 million euros below the original budget. Hundreds of companies were involved in the work, with construction sites employing as many as 600 workers and using around 150 machines on the busiest days. About 1,000 landowners were also involved.
Interior Minister Mari Rantanen described the fence as one part of a broader border surveillance system, while also linking the project to Finland’s responsibility for securing the European Union’s external border.
“The state’s most important duty is to see to the safety of its nationals,” Rantanen said at the completion event.
The decision to build the Finland border fence emerged from a cross-party political agreement in 2022, following Russia’s full-scale invasion of Ukraine and growing concern in Finland about hybrid threats along its eastern frontier.
Construction initially began with pilot sections in Imatra and Salla in 2023. Large-scale construction followed at Nuijamaa in August 2024 before the project expanded to other selected areas.
Chief of the Finnish Border Guard Markku Hassinen said the new infrastructure would improve the movement of patrols, strengthen situational awareness and increase the authorities’ ability to respond to large-scale irregular migration.
The project comes after Finland took the much more significant step of closing its eastern border crossings in late 2023. Finnish authorities accused Russia of facilitating the arrival of asylum seekers at the border, describing the situation as an example of instrumentalised migration. Moscow has rejected the accusation.
The issue has since become part of a wider debate in Finland over how the country should respond when migration is considered a tool for political pressure. The government has proposed extending the country’s controversial Border Security Act for another two years.
The legislation, commonly referred to as the “pushback law”, was introduced to give authorities additional powers in situations involving what Finland considers instrumentalised migration. It has also drawn criticism over questions surrounding its compatibility with Finland’s constitution, European Union law and international obligations concerning refugees and human rights.
The completion of the fence represents more than the end of a large construction project. It reflects a broader shift in how Finland approaches security along its eastern border following the deterioration of relations with Russia.
Finland has the longest EU and NATO border with Russia, making developments along its frontier significant beyond the country’s own national security calculations. The new fence does not run continuously along the entire border. Instead, it has been concentrated in areas where Finnish authorities judged the security benefits to be greatest relative to the cost of construction.
For the Border Guard, the value of the project lies not simply in the physical barrier but in the combination of fencing, surveillance technology and improved access for patrols. The aim is to give authorities more time and information to detect and respond to activity at the border.
With the final sections now completed, Finland has finished one of its most substantial border infrastructure projects in recent years. The fence is unlikely to be the country’s only response to the changing security environment, but it marks a clear physical expression of how dramatically the country’s eastern border policy has changed since 2022.
