Roys Road and Bells Creek Road Interchange
Between 2013 and 2015, Golding, on behalf of Department of Transport and Main Roads (Queensland), delivered the Roys Road and Bells Creek Road Interchange. The $70m project was aimed at improving safety for local and highway traffic, responding to future traffic growth, and improving connectivity of local communities.
The project involved an upgrade of the Bruce Highway intersection at Bells Creek, including the replacement of two at-grade intersections with a single, grade-separated diamond highway interchange, and the construction of Roys Road on the new alignment with a new bridge over Mellum Creek. The works also included electrical high-voltage civil works, earthworks, construction of a bridge, pavement and drainage construction, highway median works, installation of road furniture, street lighting, ITS features, landscaping, and re-vegetation works.
The most challenging aspect of the works was full pavement reconstruction of 4km of the carriageway of the Bruce Highway. The reconstruction involved removal of asphalt pavements and replacement of failed cement treated gravel pavements with lean mix concrete, up to 500mm below the existing road surface. With 40,000 vehicles per day, all works were completed at night with the road reopening to traffic each morning by 5am. This is the largest lean mix concrete pavement rehabilitation ever undertaken on a motorway in Queensland and has been an outstanding success.
The works were taking place in a highly environmentally sensitive area with habitats for the Wallum Froglet, a threatened wildlife species, being located at a number of sites within the footprint of the works. Due to the environmentally sensitive nature of the project area, Golding worked closely with the client’s ecologists to identify areas for creating new habitats immediately adjacent to proposed works in previously disturbed land and qualified spotters were engaged to relocate individual froglets to contiguous habitats. Golding created new habitats suitable for amphibians in the final design of the project’s stormwater management system. The population of the froglet actually increased during the construction period, due to the careful management by Golding.