Case Study: Seymour Whyte Construction doubles grading productivity with Trimble machine control

Seymour Whyte Doubles Grading Productivity with Trimble

Seymour Whyte was contracted to deliver $102M of repair and rehabilitation works on Queensland’s Landsborough Highway, including a 107 km main stretch (68 km of full reconstruction) and a separate 16 km renewal, plus 38 floodway rehabilitations and 46 drainage upgrades. The long distances and need for precise temporary infrastructure for heavy trucks made traditional pegging and large survey crews impractical, with most effort focused on accurate trim work rather than bulk earthmoving.

The team deployed Trimble Site Positioning Systems, Trimble GCS900 and Cat AccuGrade machine control across 14 machine-control systems and 14 total stations, supported by custom solar-powered mobile base stations. The result: surveyors on site dropped from 8–10 to 4, grading productivity roughly doubled (jobs completed in about half the time), 85 km of temporary roads built, reduced staking and material overages, and the project is running ahead of its 18-month schedule.

Seymour Whyte Construction

Tom Williams

Surveying Manager