Björkvik Air Base

The primary reason for closure was the end of the Cold War. The base was part of the 'Bas 60' and later 'Bas 90' systems, designed to counter a large-scale invasion from the Soviet Union. With the dissolution of the Warsaw Pact, this threat diminished, leading to a major strategic reorganization and significant downsizing of the Swedish Armed Forces. Numerous wartime dispersal bases like Björkvik were deemed redundant and were closed to reduce operational costs and consolidate military assets.

The former air base has been completely transformed into a private commercial venue called 'Björkvik Park'. The site is now one of Sweden's premier motorsport facilities. The main runway has been converted into a permanent, high-standard drag racing strip that hosts national and international competitions. The surrounding areas and other paved surfaces are used for drifting events, track days for cars and motorcycles, driver training, car shows, and large-scale corporate events and festivals. The military-era infrastructure has been adapted to support these commercial activities.

Björkvik Air Base (also known as Fält 58) was a significant component of Sweden's unique Cold War air defense strategy. As a 'Bas 60' (Air Base 60) type base, it was built in the late 1950s not as a permanent home for a squadron, but as a wartime dispersal base. Its purpose was to ensure the Swedish Air Force could survive a surprise first strike on its main airfields. Operations involved dispersing fighter, attack, and reconnaissance aircraft (such as the Saab 32 Lansen, Saab 35 Draken, and later the Saab 37 Viggen) from their main bases (primarily the nearby F 11 Wing in Nyköping) to pre-prepared and camouflaged locations like Björkvik. The base featured a main runway over 2,000 meters long, multiple shorter auxiliary runways, and sections of public road reinforced to act as emergency runways, along with hardened command bunkers, underground fuel storage, and dispersed aircraft stands.

There are no known plans or prospects for reopening the site as a functional airport. Its current role as a successful and established motorsport park makes any reversion to an aviation facility highly improbable and economically unfeasible. The infrastructure has been significantly modified for racing, and its original military purpose is now obsolete in the context of modern defense strategy.