CLIENT: Augility (Department of Defence)
VALUE: $4 million
DURATION: January 2019 – May 2019


Shamrock Civil Engineering was awarded the contract to complete road rehabilitation and drainage upgrade works to improve the existing infrastructure on Townshend Island within Shoalwater Bay Training Area SWBTA.

Scope of works
  • Extract and manufacture 6000m3 of roadbase material from the islands borrow pit. Extract and screen 6000m3 of scour rock from the islands quarry site. Cut to spoil 1500m3 on the bunker hill batter to widen and improve access to the Bunker and Lower Landing Zone.
  • Construction of 5.5km of rock filled table drain, 47 creek crossings and a number of drainage outlets and scour protection. The treatment of 27 culverts including the replacement of 8 culverts and 30 headwalls.
  • Over 5km of gravel re-sheeting works, site clearing of Dugong Airfield and construction of 14 new lay-by areas to improve driver safety on the island.
  • Due to the remote location of the project, Shamrock Civil were required to establish a 27 man camp on the island and mobilise plant, equipment, materials and supplies via barge while project personnel were flown on and off the island via helicopter.

Gravel material available for use on the island did not meet specification requirements. Shamrock Civil negotiated and demonstrated best possible outcome for the project in conjunction with the client and Defence, delivering the works on time despite delays to project commencement and roadbase approval and challenging remote conditions. The project was logistically challenging being one of the most remote projects that Shamrock Civil have undertaken. Shamrock Civil displayed a high level of cooperation and coordination with SWBTA Range Control for helicoper transfers and barging of materials and equipment to ensure successful project delivery.