Island Eastern Corridor

Island Eastern Corridor  is an expressway along the north shore of Hong Kong Island in Hong Kong. It starts from Causeway Bay in the west and ends in Chai Wan in the east. It is part of Route 4. The section between Causeway Bay and Quarry Bay consists mainly of viaducts built along Victoria Harbour.

After World War II, the Eastern District of Hong Kong Island developed rapidly. As a result, the major thoroughfare in the area, King's Road, became very congested.

In order to relieve the congestion problem, the idea of constructing the corridor was brought out in 1968. However, commencement of construction did not begin until 1981. The corridor was opened in three phases: Causeway Bay to Tai Koo Shing on June 8, 1984; Tai Koo Shing to Shau Kei Wan on July 26, 1985; and Shau Kei Wan to Chai Wan on October 12, 1989.

Work has been done to the expressway several times over its life, including the bridge diversions at Quarry Bay, completed in 2003, where Route 4 joins with Route 2. There is also a proposed extension of the Corridor into the hills of Chai Wan.