N3 Warden-Villiers

Project Value: R1554 Million (N3/8-9 R1 052 Million and N3/9 R502 Million)

Date Completed: December 2021/2022

Project Brief & Key Features: 

KBK was appointed by the N3 Toll Concessionaire (N3TC) for the design and construction supervision for the rehabilitation and upgrade of the N3 Highway Section 8A between Warden and Villiers. 

The project entails the pavement rehabilitation and resurfacing of approximately 93.4 km of a 4-lane undivided dual carriageway roadway.

The project typically includes the following:

  • Strengthening of the existing pavement in selected areas by means of recycling and stabilising the in-situ material to a subbase layer, followed by the construction of a new asphalt base (using modified binder);
  • Repair of the pavement in selected areas by means of milling and replacement with new asphalt base (using modified binder);
  • Widening of the existing road for surfaced shoulders and laybys consisting of a stabilised subbase and asphalt base and surfacing layers.
  • Construction of new asphalt overlay (using modified binder) over the entire road length and width.
  • Improvement of skid resistance in areas with vertical grades less than 0.5%;
  • Widening of 7 underpass bridges to accommodate the widened cross-section with surfaced shoulders.