OSLO, NORWAY — The Norwegian Public Roads Administration believes floating underwater tunnels could be the key to shorter driving times in the country. <br /> <br /> <br />Norway is home to more than 1,100 fjords, the deep glacial water inlets that divide land masses. Getting over one means taking a ferry, and that can add hours to a car trip. <br /> <br /> <br />Because fjords can be up to a mile deep, building a bridge over the waterway or tunnel underneath is not very practical. <br /> <br /> <br />But Norwegian engineers think they can build a quicker way. They want to float concrete tunnels up to 100 feet below the ocean’s surface. <br /> <br /> <br />This would allow ships to sail unobstructed by bridges. Floating pontoons would hold the concrete tunnels in place. Engineers hope the ambitious $25 billion project will be completed by 2035.
