Construction begins on R6bn N3 upgrade at Mariannhill Toll Plaza – Sanral
The South African National Roads Agency Limited’s (Sanral’s) R6-billion project to upgrade the N3 highway between Mariannhill Toll Plaza section 1 and Key Ridge section 2 has started.
The State-owned roads company says the project will take 60 months to complete.
The contract covers the upgrade of an 11.1-km section of the N3 and is being managed through Sanral's KwaZulu-Natal provincial office in Pietermaritzburg.
Work to be carried out includes the widening and upgrading of the existing N3 carriageways; the construction and rehabilitation of road pavement layers; the construction of two new viaduct bridges and drainage structures; and improvements to stormwater infrastructure, including pipe crossings, subsurface drainage systems, and concrete and earth drains.
The contract also includes the construction of concrete median barriers between carriageways, major culverts, as well as retaining walls and mechanically stabilised earth walls.
Public lighting will also be upgraded.
“Motorists and road users are advised that the impact of the construction on traffic will be significant,” says Sanral Kwazulu-Natal project manager Nondumiso Mabaso.
“While every effort will be made to maintain safe and efficient traffic flow within the project limits, road users should anticipate delays and plan their journeys accordingly.
“These upgrades are essential to improving safety, mobility and the long-term capacity of one of South Africa's most important transport corridors.
To prioritise the safety of both construction workers and road users, the speed limit along the route will be reduced to 40 km/h for heavy vehicles and 60 km/h for light motor vehicles during construction, adds Mabaso.
During the yearly December/January shutdown period, a minimum two-way traffic flow will be maintained at all times within the project limits.
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