Cottrill Road Extension
SectorTransport, Urban
ClientMoreton Bay Regional Council
LocationCaboolture
DurationSeptember 2017 — June 2018
Contract Value$4.2M

The project involved the extension of Cottrill Road to the intersection of Pumicestone Road and Ardrossan Road. This project provided a signalised intersection allowing safe pedestrian crossing to the new QSP Caboolture North State School.

 

PROJECT OVERVIEW

Demolition and removal of existing culverts 
Supply and installation of large box culverts including end structures 
Construction of in-ground Inlet stormwater chambers 
Subsoil drainage 1,700 m   
Retaining walls 20 m2   
Clearing and grubbing 14,900 m2  
Subgrade treatment with road mattress and geotex-tile 15,220 m2  
Road excavation 4,450 m3   
Special excavation 595 m3   
Road embankment 4,463 m3   
Pavement works   
Installation of Road lighting and traffic signals 
Guardrails, guide posts and signage   
Fencing   
Linemarking 
 
Cottrill Road/Pumicestone Road/Ardrossan Road was upgraded from a three-way priority controlled intersection to a four-way signalised intersection. Works included new concrete footpaths to both sides of Cottrill Road, school and Pumicestone Road, associated kerb and channel and drainage works, installation of new Rate 2 road lighting infrastructure, linemarking, signage and landscaping.
Major components to the project involved the construction of 4 cell 1800 x 1200 RCBC under the new  Cottrill Road and the extension of  3 cell 1800 x 1500 RCBC under Pumicestone Rd into a new in-ground inlet chamber. As the site was in low laying area relative to the water table, significant subgrade was replaced and a geotextile wrapped road mattress.
Construction was staged in a way to continually provided safe access for the pedestrians which included dedicated traffic controllers supervising road crossing during school drop off and pick up times. 
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