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Waterford Tamborine Road Updgrade



Department of Transport and Main Roads


January 2021


Logan Village, Queensland

Geleon were engaged by SMEC to undertake cost estimating activities for this project which involved the preparation of a Business Case to upgrade Waterford – Tamborine Road from Hotz Road to Camp Cable Road at Logan Village, Queensland.

With current traffic predictions demonstrating that this section of roadway will reach an unacceptable capacity by approximately 2028, upgrading the existing mid-block section is required to alleviate possible safety issues arising as traffic volumes continue to increase.

Prepared in accordance with TMR’s Project Cost Estimating Manual, a P50 / P90 Total Project Cost Estimate and associated report were prepared using a combination of unit rates and first principles estimating techniques that determined Construction Contractor's Costs, Principal's Costs, considered Planned and Unplanned Risks, Escalation and utilised @Risk software to perform a Monte Carlo simulation to ascertain the Total Project Cost at 50 and 90-percentile likelihoods.

Estimated costs were then separated into Capex and Opex cost elements in accordance with Section 8 - Work Breakdown Summaries of the Transport Infrastructure Cost Classification Guide for Recording Expenditure - Implementation Guide for the TMR Infrastructure Asset Accounting Policy and Cost Breakdown Structures.

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