In 1962, the issue was brought up again, this time as a pontoon bridge. The depth and steepness of the fjord would make it impossible to fasten the bridge to the sea bottom. However, a method without lateral anchorage had been developed for the Hobart Bridge in Australia. Another alternative was launched in 1963, involving a submerged floating tunnel through the fjord. It was estimated to cost between NOK 19.5 and 26 million. Norwegian expatriate Leif J. Sverdrup, co-founder of Sverdrup & Parcel of the United States, inspected the fjord in 1965 and was later hired to plan the bridge in cooperation with Oslo-based civil engineering consultants Prosjektering. Municipal engineers started measuring currents in 1966. Prosjektering and Sverdrup & Parcel recommended a pontoon bridge with a movable section to allow passage of ship traffic. In 1967, a new proposal was launched, in which a seaway tunnel would be blasted out in the rock on the Bergen side.