The works mainly include:

• site clearance and formation;
• widening of Fanling Highway (Chau Tau to Pak Shek Au Portion);
• construction of Pak Shek Au Interchange;
• modification of Castle Peak Road (Chau Tau Portion) and Pak Shek Au Bridge across Fanling Highway;
• construction of footbridge across Fanling Highway (Pak Shek Au Portion);
• extension of existing subways;
• construction of associated works including water mains, drainage, retention tanks, sewerage works, roadworks, cycle tracks, footpaths, junction improvement, box culverts, slope works, retaining walls, street furniture, landscaping works, electrical and mechanical works and other ancillary works