The Stord and Bømla Bridges were both constructed using the same method and by the same contractors, Arbeidsfellesskapet Triangle Contractor, a joint venture between NCC Eeg-Henriksen and HBG Steel Structures. Construction started on the Stord Bridge on 20 February 1999. After the pylons were completed, two catwalks were erected between them, with the constructors choosing a continual catwalk instead of three separate ones. The cables were spun on-site using a reel; this also allowed for cost savings, as the reels could be used two times. The cables were spun using the air spinning with controlled tension, which allowed spinning with little space use and with a crew with limited experience with spinning. The two bridges were the first time that on-site spinning was used in Norway. The fastening poles were delivered five weeks after schedule; a new mounting method was developed which allowed them to be installed in a quarter of the time, in part by using a helicopter, and the whole five-week delay was eradicated. This allowed the deck sections to be installed as scheduled. The decks were produced in Schiedam, Netherlands, for the Stord Bridge and in Italy for the Bømlo Bridge. These were sent by barge to Sunnhordland. The section length was different between the two bridges, the Stord Bridge having them in lengths of and the Bømla Bridge in sections of . This was to accommodate the latter's smaller vertical curvature.