Roads & Highways

Through our global network, we provide sustainable engineering solutions across the entire transport spectrum, including roads and highways, bridges and structures, construction and pavements, aviation and ports.

We provide road and highway design services using the latest technology and 3D software to ensure visual representation and optimised design solutions. Our capabilities include: design development of rural roads; urban collectors; primary roads and dual carriageway freeways; at grade intersections; grade separated interchanges; fully free flowing systems interchanges; and public transport and non-motorised transport facilities.

Our services
  • Economic feasibility studies using HDM4
  • Corridor assessment and route location
  • Geotechnical investigations
  • Concept, preliminary and detail design
  • Drainage structures and erosion protection
  • Intersection and interchange design
  • Road marking and signage design
  • Value engineering and quality assurance
“We partner with our clients and organisations to deliver excellence across the life-cycle of a transport project, regardless of size, complexity or location.”
– Logashri Sewnarain, Function General Manager, Roads and Highways

N2 Highway Improvement

SMEC was engaged by the South African National Roads Agency Limited (SANRAL) to provide consultancy services on the to the N2 upgrade project.

This project was a successful collaboration between various functional groups within the company, including: Roads and Highways; Structures, Construction and Pavements; Hydropower and Dams (for geotechnics); and Power & Energy (for the street lighting).

Project works were completed within budget over a 46 month timeframe. Learn more


Reconstruction of Section 3 N7 Highway

SMEC South Africa successfully delivered a project which saw the upgrading and improvement of a 27.7km section of the N7, the National Highway which runs between the Western Cape and Namibia. Section 3 runs between the Citrusdal and Cederberg Intersections.

The existing road, which consisted of a surfaced width of 6.6m with narrow gravel shoulders, was upgraded to SANRAL’s standard cross-section of 12.4m surfaced width. The standard of the vertical alignment was improved by constructing 650 000m³ fills using material obtained from cuttings. Learn more


Ballito Interchange

SMEC carried out the initial investigations which included structural, geometric and traffic accommodation considerations. SMEC’s services included geometrics and structural design, materials investigation and pavement design, traffic analysis and construction supervision.

The Ballito Interchange Upgrade, located 45 km north of Durban, was identified as a priority project by the South African National Roads Agency SOC Ltd (SANRAL). This was due to increased traffic flow predictions in the surrounding area, caused by new developments including growth around the new King Shaka International Airport. Learn more