Our pragmatic approach to verification provides clients with an efficient process to enable project milestones to be met, whilst managing risk.
Tonkin's team of certified, experienced engineers and designers provide design and construction verification services on a range of transport projects across Australia.
Having designed, certified and undertaken construction verification on key infrastructure projects over many decades Tonkin understands the importance of collaborative working relationships with contractors, designers and clients and that a pragmatic approach is often required when resolving project issues.
Independent Design Certification and Proof Engineering
Tonkin provides Independant Design Certification for a range of projects in order to ensure that design, safety, maintenance, constructability and whole-of-life objectives are achieved.
Construction Verification
Tonkin’s construction verification services provide our clients with peace of mind that their infrastructure is constructed in line with design requirements and standards. We can provide on-site construction verification for projects we have designed, as well as providing third party/independent verification.


Services and expertise
- Major road and highway upgrades
- Regional road upgrades
- Transport structures
- Pavements including proof engineering
- Drainage and services
- Road lighting upgrades.