Trans African Concessions (TRAC) this month kicks off roughly R1-billion in upgrade and rehabilitation work on the N4.

The N4 toll route is a build-operate-transfer road, and is about 570 km long. TRAC has a 30-year concession with the South African and Mozambican national roads agencies to develop, manage and maintain the road.

The toll route starts from Solomon Mahlangu off-ramp in Tshwane and ends at the Maputo harbour in Mozambique.

TRAC says it routinely undertakes a range of construction projects along the route, including routine pavement rehabilitation and strengthening, as well as major upgrades such as road widening and the construction of new bridges and interchanges.

This month, main contractor TauPele Construction has started work on a R570-million project to rehabilitate the N4 from Solomon Mahlangu drive in Pretoria to the nearby town of Bronkhorspruit.

The expected completion date is July 2027.

Also starting is a R393-million project to rehabilitate the section of the N4 from the Van Dijksdrift Interchange to Wonderfontein.

The main contractor is ACTOP Construction.

TRAC adds that work is progressing well on its other contracts.

The upgrading and rehabilitation of the Schoemanskloof section is 20% complete.

Work started in October last year, with the expected completion date October 2027.

The main contractor here is also TauPele Construction.

The Crocodile Gorge upgrade started in March this year, and is scheduled for completion in February 2028.

Work is 7% complete, and the main contractor is Raubex Construction.

The rehabilitation of the N4 between Hectorspruit to the Lebombo border post started in May, and is expected to be completed in May 2027.

Construction under Roadspan/WBHO JV as the main contractor is 5% complete.

Work on the stretch of the N4 between the Ressano Garcia border post to the Moamba interchange is 10% complete and includes the rehabilitation of the highway, as well as the construction of a new passing lane.

Work started in October last year and is scheduled for completion in December 2027.

The main contractor is WBHO Projects Mozambique.