In 1984, BMV stated that new rig constructions demanded that tall structures have access to the port, which would require a clearance below of . The demand was supported by the Bergen Port Authority board. This would result in the pylons being over tall, making them second only to Golden Gate Bridge in height. In 1985, the costs for the clearance alternatives was NOK 370 million for , NOK 400 million for and NOK 470 million for . BMV proposed that a submersible floating tunnel be built, and estimated it to cost NOK 500 million.