Works in Central District are undertaken by the following contacts: a) Central Interchange Contract (Contract No: HY/2009/18) and b) Tunnel (North Point Section) and Island Eastern Corridor Link Contract (Contract No: HY/2009/19) and c) Tunnel Buildings, Systems and Fittings, and Works Associated with Tunnel Commissioning Contract (Contract No: HY/2011/08). 

A section of the tunnel structure in Central District is constructed under
Central Reclamation Phase III (CRIII). 

a) Central Interchange (Contract No: HY/2009/18) 
This contract is for the construction of a 220-metre-long tunnel section, together with its approach road and at-grade slip road. Rumsey Street Flyover will be widened and modified.

b) Tunnel (North Point Section) and Island Eastern Corridor Link 
(Contract No: HY/2009/19) 

This contract includes modification of Rumsey Street Flyover eastbound down ramp and westbound up ramp in Central.

c) Tunnel Buildings, Systems and Fittings, and Works Associated with
Tunnel Commissioning (Contract No: HY/2011/08) 

This contract is for the construction of the Tunnel Building in Central District, i.e. West Ventilation Building (WVB), and tunnel cladding works, installation of route-wide tunnel electrical and mechanical works as well as the traffic control and surveillance system. The contract scope also includes testing and commissioning works.