Contract No. ST24/85 New Town, Stage II Route 5 - Sha Tin Connection, Phase I

CLIENT Territory Development Department HKSAR

ENGINEER Manusell Consultants Asia Ltd.

CONTRACTOR Build King Group

CONTRACT VALUE HK$210 million

CONSTRUCTION PERIOD June 1987 to October 1991

MAJOR QUANTITIES : Excavation 790,000 cu.m Filling 240,000 cu.m R.C. retaining wall 3,000 m, avg. 5 m high Drainage 3,500 m Subsoil drains 2,000 m Road widening 400 m of New carriageway 2,200 m Elevated Structure 1,200 m

This project was for the construction of the Shatin approach to the Tunnels, part of the Route 5 Expressway linking Shatin and .

The 2km long expressway beings at Tai Po Road near the KCR Shatin Station and rises on a 13 span elevated viaduct over the railway line and Tai Po Road to an abutment halfway along the route to the tunnel portals.

The major works consisted of :  a 2.2km dual 2-lane truck road  cut and fill road platform and 340m of retaining wall  site formation  access roads, footpaths, cycle tracks  culverts and landscaping

HIGHLIGHTS :

One km of transparent noise barriers, 1 to 2m in height, was built along the expressway near to minimize noise disturbance to the local residents.

There was a high degree of complexity in the construction of crossheads of various sizes. Two main types of falsework in shoreframe and structural steelwork were specially designed and used in the project.

A total of 486 precast post-tensioned concrete U-beams were manufactured on site with lifting gantries and transportation equipment designed in house. A wide range of beam lengths added to the complexity. Special gantries were purposely designed and built by the company for lifting and placing precast beams weighting 65 tonnes.