Gary Docherty

Head of Construction

Gary Docherty is a highly experienced rail construction leader at ASI, bringing 34 years of practical expertise to successfully deliver complex signalling and infrastructure projects. A qualified licensed Electrician and NSW electrical contractor, Gary joined ASI at its inception in 2015 as Construction Lead. He now works as Construction Manager, overseeing all construction activities, estimating, and resourcing.


Prior to ASI, he spent 10 years as Construction Manager at Downer (2005–2015). His major project delivery includes:

  • Inland Rail Albury–Parkes and Narrabri–North Star
  • Metropolitan Freight Network upgrades at Port Botany and Enfield yards
  • Georges Plains Passing Loop and signalling upgrade for John Holland / CRN near Bathurst
  • ARTC Ettamogah Rail Hub
  • ARTC Henty Microlok signalling upgrade
  • Multiple Hunter Valley and North Coast level crossings and passing loops for ARTC
  • Large coal balloon loops at Boggabri and Maules Creek


Gary excels at coordinating large teams, plant, and materials while maintaining tight commercial and contractual control. He is known for his deep technical knowledge across civil, track, signalling, and electrical works, and for building strong relationships with clients and stakeholders.