Tetsuo Harano Tunnel HI
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Description: The Tetsuo Harano Tunnel, located on the island of Oahu in Hawaii, is a significant engineering marvel that forms part of the H-3 Interstate Highway, connecting the windward side of the island to the leeward side. Named after Tetsuo Harano, a dedicated state highway engineer, the tunnel stretches approximately 5,165 feet (1,574 meters) through the Koolau Mountain Range, making it one of the longest highway tunnels in the United States. Completed in 1997 after decades of planning and construction, the tunnel not only facilitates efficient transportation but also offers breathtaking views of the lush Hawaiian landscape. Its construction faced numerous challenges, including environmental concerns and the need to preserve the natural beauty of the surrounding area, ultimately resulting in a project that balances modern infrastructure with environmental stewardship.