Tour 1: Hangar Bridge

Photo: Vegard Thorvaldsen/Statens vegvesen

Date: Friday 12 June
Time: 12:30
Meeting point: TBA

Visit the newly opened Hangar Bridge in Trondheim, a 55-m-long and 9-m-wide all-aluminium pedestrian bridge.

This bridge is among the few aluminium bridges built in Norway over the past three decades. The bridge deck is made from 100% recycled aluminium, sourced from the dismantled offshore oil and gas platform Gyda, which was in operation in the North Sea from 1990 to 2021. More than 18,000 t of steel and other metals were cut into coarse pieces, sorted, remanufactured, and remelted, achieving a recovery rate exceeding 98%.

Aluminium was primarily used in helidecks, walkways, and equipment modules, mainly from the 5xxx and 6xxx series. The material was sent to Stena and Hydro in Sweden for shredding, sorting, remelting, DC billet casting, extrusion, and friction stir welding of bridge profiles and panels.

Furthermore, sub-assembly of the bridge sections took place at Leirvik AS in Norway before final on-site assembly. The 60-tonne structure was installed using a single crane. Parts of the bridge sections, including non-load-bearing elements, were also joined using automated laser–arc hybrid welding (LAHW). This is a novel and promising technology that improves productivity, reducing welding time by 10–20 times, while also lowering consumable use and energy demand compared with MIG welding.

Tour 2: NTNU & SINTEF Labs

Date: Friday 12 June
Time: 12:30
Meeting point: TBA

More information about Tour 2: NTNU & SINTEF Labs will be available soon.