The New Sotra Bridge, part of the Rv.555 Sotrasambandet project, is a traditional suspension bridge which is under construction near Norway’s second-largest city, Bergen. This paper introduces innovative techniques used in the design and construction of the main concrete towers under challenging site constraints. Key innovations include the development of a caisson-type concrete formwork for the tower foundation to address limited space and difficult rock conditions, and the use of a pass-pillar beam for cross beam construction to enhance structural efficiency. Additionally, the project employed both auto climbing and gang formwork methods for the towers, along with the simultaneous use of flat-top and luffing tower cranes to optimize construction efficiency.
Lim et al. (Wed,) studied this question.