Eastern Harbour Crossing

The Eastern Harbour Crossing, abbreviated as "EHC", is a combined road-rail tunnel that crosses beneath Victoria Harbour in Hong Kong. Opened on 21 September 1989, it connects Quarry Bay, Hong Kong Island and Cha Kwo Ling, Kowloon East.

History
Initially, the Government of Hong Kong had planned to build a bridge across the eastern portion of the harbor but due to fears of it blocking planes landing Kai Tak airport, this was shelved in favour of a tunnel.

In 1986, the government gave New Hong Kong Tunnel the right to run the tunnel on a 30-year franchisee with the lease expiring in August 2016. The tunnel features two components, a road part and a rail part: The Chinese investment group CITIC Pacific has an interestin both parts, controlling the road part (71% stake) and has a 50% stake in the rail part. CITIC also controls 50% of the Western Harbour Tunnel Company. The general contractor was Kumagai Gumi, and the consulting company was Hyder Consulting Ltd.
 * The road part of the tunnel is branded by the operator as the Eastern Harbour Tunnel, although the government refers to the tunnel itself as the Eastern Harbour Crossing. The tunnel is governed by the Eastern Harbour Crossing Ordinance. The road part links the Island Eastern Corridor in Hong Kong Island, Lei Yue Mun Road, Tseung Kwan O Tunnel, Tseung Kwan O——Lam Tin Tunnel and the Kwun Tong Bypass in Kowloon East.
 * The rail part, lying to the southeast of the road part, runs between Quarry Bay and Yau Tong stations of the MTR Tseung Kwan O line.

Tunnel tolls
Tolls are collected manually or electronically in both directions at the toll plaza on the Cha Kwo Ling side.

Traffic
, there are 46 bus routes passing through the tunnel.

Controversies
In June 2005, CITIC decided to raise the toll for using Eastern Harbour Crossing from HK$15 to HK$25 for private vehicles and up to 67% for other classes of vehicles, under the fare adjustment mechanism derived from the build-operate-transfer (BOT) model. This increase aroused criticisms that the model was detrimental to the public interest, with the increase shifting more traffic to the already congested Cross-Harbour Tunnel.