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. In response, the Public Road Administration proposed that tall rigs could sail to Bergen via Herdlafjorden, which is located on the east side of Askøy. While common for coastal ship traffic, there are two points which are too shallow for deep vessels, at Det NEue and herdlaflaket, where a wide and deep trench could be blasted out. The operation was estimated to cost NOK 30 million, and would be cheaper than raising the clearance of the bridge. The toll company subsequently offered to cover the costs of the blasting and the port authority agreed to allow the bridge height be . Askøy Municipal Council voted on 26 August 1982 that they preferred that connection from the bridge to the city center to run via a tunnel from Kjøkkelvik to Gravdalsvatnet. Bergen Municipality was concerned about that such a road would have a negative impact on the neighborhoods it would run through, and on 28 October 1985 voted for a tunnel from the bridge to Storavatnet and that a new highway would have to be built from there to the city center before the bridge be built. Specifically this involved the construction of two new tunnels, the Lyderhorn Tunnel and the Damsgård Tunnel. The latter was part of the existing plans for road construction and was scheduled for completion in 1992. However, the Lyderhorn Tunnel would have to be pushed forward, as it was planned completed in 1996. The toll company offered to advance NOK 50 million of the necessary NOK 70 million that the tunnel costs, on condition that it be refunded in 1994 and 1995 and that Bergen Municipality pay half the interest costs. The proposal was passed by both municipalities. In 1982, a consortium consisting of Kristian Jebsens Rederi, BMV and Lau Eide made a proposal to borrow money privately abroad and hire Ishikawajima-Harima Heavy Industries of Japan to build the bridge. The proposal was rejected by the Public Roads Administration, who wanted to have an open tender to build the bridge, and wanted the project organized as a regular road construction administrated by themselves. The Public Roads Administration continued to