Road Over Greens Interstate H-3 is a major highway project in Hawaii that encompasses a series of elevated roadways and tunnels connecting Halawa Valley, Pearl Harbor and Kaneohe Bay. The project was initiated in response to the need for a more efficient transportation system on the island, as the existing highways were inadequate for the growing population and increasing traffic congestion.
The project was first proposed in the 1960s, but it faced significant opposition from environmentalists, who were concerned about the impact of the proposed highway on the natural beauty of the island. It was not until the early 1990s that the project finally received the necessary approvals to proceed.
Construction of the Road Over Greens Interstate H-3 began in 1993 and was completed in 1997, at a cost of approximately $1.3 billion. The project consists of a series of elevated roadways and tunnels that traverse the rugged terrain of the Koolau Mountains in central Oahu. The roadway is approximately 16 miles long and includes three tunnels, including the Tetsuo Harano Tunnels, which are among the longest highway tunnels in the United States.
The Road Over Greens Interstate H-3 was constructed using state-of-the-art engineering and construction techniques. The roadway was designed to withstand the high winds and heavy rains that are common in the area, and to minimize the impact on the surrounding natural environment. The project also incorporated advanced technologies, such as intelligent transportation systems, to improve traffic flow and enhance safety.
It has had a significant impact on transportation in Hawaii, providing a faster and more efficient route between the eastern and western parts of Oahu. It has also helped to alleviate traffic congestion on the island’s existing highways, improving the quality of life for local residents and visitors alike.