Work has begun on a new single-lane roundabout at the junction of Onkaparinga Valley, Nairne and Junction roads at Balhannah, as part of a suite of safety upgrades.
Upgrades include pavement works, road widening, easing of tight curves, shoulder sealing, safety barriers and vegetation management, as well as a single-lane roundabout with a mountable kerb to allow heavy vehicles to manoeuvre more e...
