Research / Cost drift statistics / Final cost over the first promised cost, 836 Australian transport projects

Final cost over the first promised cost, 836 Australian transport projects

Name: Final cost over the first promised cost, 836 Australian transport projects
Creator: Demiton
License: https://creativecommons.org/licenses/by/4.0/

24%of the first promised cost

AustraliaModerate confidenceOwner's money

24% of the first promised cost: Final cost over the first promised cost, 836 Australian transport projects (Terrill & Danks (Grattan Institute), 2016; Australia; moderate confidence).

What it is. 24% of the first publicly promised cost, final versus promised.

Sample. 836 Australian transport projects of $20m or more, 2001-2016; $28 billion over in total; 34% of projects went over.

What it is not. Measured from the first promise, mostly before any contractor is signed, and paid by the owner (the taxpayer). The median overrun is 0%: a few projects dominate the mean.

Where it came from

Terrill & Danks (Grattan Institute) (2016), Cost overruns in transport infrastructure
PDF pp.9, 29 · source record

overrun_signal/overrun_transport_australia_promised · AU · F42 ·the record ·link to this figure ·dispute this figure(or email support@demiton.io)

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