The Shenzhen section of the Corridor, was also included as the extension of the S3 Guangshen Riverbank Expressway [zh] since circa 2010.

It was opened on 1 July 2007, the 10th anniversary of the establishment of the Hong Kong as a special administrative region of China.

According to the People's Daily as well as the China News Service, the corridor consists of three parts:[3][4] a highway bridge which spans from Hong Kong and across the boundary of Hong Kong and Shenzhen, Shenzhen Bay Port as a border checkpoint, which is entirely inside the administrative boundary of Shenzhen, and roads that connect the corridor to the road network, the S3 Guangshen Riverbank Expressway [zh][3][nb 1] However, departments and agencies of Hong Kong Government defined the bridge and port as separate items,[6][7] and called the bridge as Hong Kong–Shenzhen Western Corridor[6] or Shenzhen Bay Bridge.

The study was completed in 2001, and proposed to build the Hong Kong–Shenzhen Western Corridor and Deep Bay Link, as the fourth land boundary crossing.

[11] The other three land boundary crossings were Lok Ma Chau, Man Kam To and Sha Tau Kok respectively.

[12] In December 2002, the State Council (the Central Government) approved the plan of the route, which was submitted by Shenzhen.

[14] The funding of the Hong Kong Port Area, which was estimated for HK$2.5 billion in MOD prices, was approved by the FC on 18 July 2003.

Shenzhen–Hong Kong Western Corridor Project Office, a government agency, was responsible to build all the facilities within the Shenzhen boundary.

[22] However, a scandal was exposed in 2015, which the facilities built by Shenzhen–Hong Kong Western Corridor Project Office (excluding Hong Kong Port Area) were over-budgeted from the original estimate RMB 2.4 billion, some items were purchased without open tender, as well as embezzle of public funds.

The corridor was scheduled for completion in 2006 but owing to the delay[citation needed] in the construction of the Shenzhen section and legal issues about applying the law of Hong Kong in co-location of immigration and customs facilities of Hong Kong and mainland China in Dongjiaotou[citation needed], it was officially opened on 1 July 2007 by then-President and Communist Party general secretary Hu Jintao of China and the then-Chief Executive of Hong Kong Donald Tsang.