With their 254 m, the pylons are among Denmark’s highest points. The caissons, the official name of the foundations for the pylons, were cast at a factory in Kalundborg and towed 70 km to the bridge site. Each caisson weighs 32,000 tons and is placed on stone beds to provide them with a stable surface.
The rest of the pylons were cast on site in 4m lifts, in a so-called climbing formwork that kept the concrete dry and ensured hardening.