Specialist rail surveying plays a critical role in the successful delivery of major rail infrastructure projects. Across several large metropolitan rail expansions in Western Australia, survey teams supported new track construction, rail renewals, and complex installations across tunnels, bridges, and operational corridors. Working across multiple project sites, accurate survey control, planning, and coordination ensured construction teams could deliver works efficiently within tight rail access windows.

The project involved supporting a wide range of rail activities including track installation, turnout construction, infrastructure clearances, and tunnel and bridge works. Survey data was integrated with rail construction systems to guide tamping operations and ensure track was positioned correctly to design. Advanced technologies such as laser scanning, GNSS, and total station rail systems were used to capture highly accurate data and provide reliable models for construction and verification.

Innovative surveying approaches also improved safety and efficiency on site. Techniques such as magnetic prism control points and detailed point-cloud scanning helped surveyors capture accurate rail corridor data while reducing time spent in high-risk areas. These methods allowed teams to work effectively across complex environments including tunnels, bridges, and constrained urban corridors.

Rail Surveying Capabilities Used

• Rail infrastructure and track construction surveying

• Survey control establishment for rail corridors

• Top of rail surveys and track alignment verification

• Turnout installation and rail renewals support

• Laser scanning and point-cloud modelling for infrastructure clearances

• Tunnel and bridge rail survey support

• Integration with machine guidance and tamping systems