The order to release 75 documents about the $2 billion Perth Freight Link would reveal that the biggest road infrastructure project in WA's history was politically motivated with little planning, says former federal Labor MP and state minister Alannah MacTiernan.

Ms MacTiernan won a two-year battle when the WA and federal governments were ordered this week by the Administrative Appeals Tribunal to grant her Freedom of Information request for documents related to the controversial $2 billion Perth Freight Link. The federal infrastructure and state main roads departments had fought in…