NDRRA, South Burnett Region Flood Restoration Works
As part of the National Disaster Relief and Recovery Arrangements (NDRRA), CMC was engaged to perform extensive restoration works to rehabilitate and replace Council infrastructure that had been damaged during the severe flood events of 2011.
The damage was spread across the entire Council area and CMC developed a detailed delivery plan to efficiently coordinate the works and manage interactions with traffic and community members.
CMC delivered the project early and under budget, and was awarded an additional package of works in the north of the shire.
Construction activities were spread across 222 roads and largely involved road maintenance works, reconstruction/rehabilitation of 31 floodways, bitumen seals, asphalt overlays, guardrail, pavement reconstruction and unbound gravels.
A major part of the scope included slip repair works to Boat Mountain Road, where old drainage structures had failed and water had caused the embankment to slide. Work for this section included excavating the slip material to solid ground, using gabion baskets to create a toe for the new embankment, and rebuilding the embankment with rock fill. It also involved new drainage structures, and cement modified pavement across the top of the work and new seal.
HIGHLIGHTS & OUTCOMES
Completed works $1m (approximately 5%) below budget.
Completed works five weeks early.
Committed additional resources to define scope in shortest possible timeframe, confirm treatments and extent of damage.
Programmed works on a geographical basis to maximise shared resources and minimise machinery downtime.
Proposed cost and time efficient insitu cement stabilisation alternative to overcome unsuitable subgrade.
83,000 manhours with zero LTIs.
Sustained strong client relationship.